“Physicists use the wave theory on Mondays, Wednesdays and Fridays, and the particle theory on Tuesdays, Thursdays and Saturdays.”
WH Bragg (1862-1942)
“So what’s the speed of dark?”
Stephen Wright
There continues to be a fascination with the German atomic bomb effort from World War II as evidenced by the May, 2022, article The elusive truth of Farm Hall. Below I discuss the play “Copenhagen” which made quite a stir several years ago. Now there is to be a play based on the so-called Farm Hall Transcripts [PDF]. These are transcripts of secretly taped conversations of the German scientists (including Heisenberg) who were interned at Farm Hall in England after the War. It seems to be an endless game to try to interpret from these conversations what the Germans did and did not know during WWII about making a bomb. The play Copenhagen by the renowned playwright and author Michael Frayn (he wrote “Noises Off”, for example) which explores the occasion in 1941 when Heisenberg paid a visit to Bohr in Copenhagen. The intriguing question, of course, is “what did they discuss?” Some speculate that Heisenberg was trying to obliquely warn Bohr about the German atomic bomb project. There has been some new (Feb. 2002) light shed on what transpired through the release of some letters from Neils Bohr (see also New letters expose war-time secrets). There is also a “Heisenberg letter” which can be found at the Who Was Werner Heisenberg? site maintained by the Heisenberg family. There one can find a number of Heisenberg’s letters and writings translated into english. There is also a resources page. The London version of the play saw very enthusiastic reviews while the Broadway version won several Tony awards! The play opened in Toronto in January, 2004. There were good articles on the show and Frayn in the Toronto Star and Globe & Mail. I saw the opening-night show on January 7 (which was great) and there were reviews in the Star and Globe & Mail. A panel discussion of the scientific and ethical issues addressed by the play happened on February 8, 2004, and I was one of the panelists. There were a number of symposia, both in Europe and the U.S., discussing the issues surrounding the play. For example, there was a day-long symposium on the play “Creating Copenhagen” at the City University of New York which examined the scientific and historical issues brought up in the play as well as artistic issues associated with the writing and staging of the play. Several of the presentations at this symposium were reprinted in the July 2000 issue of Physics Today including: A Historical Perspective on Copenhagen, The German Uranium Project, and Werner Heisenberg and Albert Einstein. There is also a nice bit of detective work by Jeremy Bernstein in The Drawing or Why History Is Not Mathematics from the journal Physics in Perspective. I also recommend the book by Jeremy Bernstein entitled Hitler’s Uranium Club. The play was the subject for the University of Pennsylvania’s 1999 Reading Project. At this site you can find a number of fascinating essays about the play written by both artists and scientists. There are also articles in May 1999 CERN Courier and June 1998 PhysicsWeb discussing the play. (There is another article by Jeremy Bernstein on Heisenberg’s trip to Poland in 1943.) Finally, there are a recent (January 2010) set of remarks entitled Quantum imaging: Scattered observations on “Copenhagen” which offer yet another take on the play.
Over a hundred years ago (November 25, 1915 to be precise) Einstein submitted his paper on the General Theory of Relativity. Here are a few articles that commemorated this event:
- Nature Special Issue – General Relativity at 100 – November, 2015
- On the Anniversary of Two Scientific Revolutions – November, 2015
- What Is General Relativity? – November, 2015
- Space, the Frontier Right in Front of Us – November, 2015
- A Century Ago, Einstein’s Theory of Relativity Changed Everything – November, 2015
Albert Einstein and Relativity in the Pages of The (NY) Times – November, 2015 - Researcher’s work offers more proof of Einstein’s general theory of relativity – November, 2015
- How Politics Shaped General Relativity – November, 2015 Einstein’s Biggest Triumph: A Century of General Relativity (Op-Ed) – November, 2015
- Standing the Test of Time (and Space) – October, 2015
- General Relativity: 100 Years Old And Still Full Of Surprises – October, 2015
There has been an increasing interest in science shown by artists and vice versa. which has lead to some interesting artworks – like those shown in the exhibit Signatures of the Invisible. There is also an interest from the scientist’s side to see how artists perceive science. Towards this end, the British Institute of Physics commissioned the Rambert Dance Company to produce a new work to celebrate the achievements of Albert Einstein – Celebrating Einstein with Dance, Constant Speed (brochure) premiered in 2005. The originators of the project were interviewed in New Scientist.
Time is a particularly sticky problem and has been an obsession of philosophers and physicists since, well, since time immemorial. A nice overview is given in Time examined and time experienced (2018). The topic has generated lots of musings such as The Period of the Universe’s Clock (June, 2020) [The PRL article is Physical Implications of a Fundamental Period of Time] and The origins of space and time (August, 2013). Einstein’s Clocks (October, 2015) is a layman’s discussion of the conundrum of time by Fermilab’s Don Lincoln. Check out the essay entries (December 2008) to fq(x) – Foundational Questions in Physics and Cosmology on The Nature of Time. There is also a book by Dan Falk called In Search of Time: Journeys along a Curious Dimension about which the Ottawa Citizen said “Falk’s book is what Hawking’s A Brief History of Time should have been.” Falk has also posted an essay on time travel which you might find amusing. In 2013, Lee Smolin also put out a book on time called Time Reborn which you may want to peruse. There has always been plenty of verbiage on that old chestnut, “Did time begin with the Big Bang?” Have a look at another video from Don Lincoln on The Big Bang Theory (October, 2014). There’s also The First Second After The Big Bang (September, 2014) from the Universe Channel. An August, 2010 article Death Of The Big Bang, Or The Problem Of Time’s Beginning also discusses the issue. Various physics heavyweights have weighed in on the matter in the past little while including Stephen Hawking on The Beginning of Time. There are several sites on how one experimentally examines such a question including Observing the Beginning of Time and Beyond Einstein. Finally, this is a question with a long history of theological debate. If you are interested in this kind of thing, have a look at “Genesis: Science and the Beginning of Time” [PDF] or God and the Beginning of Time for a religious perspective. (I won’t bias you with my opinion but would be happy to discuss it).
A number of years ago all of Einstein‘s scientific writings were made available online at Einstein Archives Online. English translations of his five famous papers from the “miracle year” 1905 are collected in the book Einstein’s Miraculous Year: Five Papers That Changed the Face of Physics. Now (December, 2014) the Collected Papers of Albert Einstein including love letters, report cards, personal thoughts and experiences are available online here both in the original german and with english translations. There’s a nice article about the release of the papers – Inside the mind of Einstein: 44 years of writings released online – from the December 6, 2014 Globe & Mail.
This is actually old, not new, but back in 2002 the electron double slit experiment was voted as Science’s most beautiful experiment. There are some other great one’s in the list as well as described in Here They Are, Science’s 10 Most Beautiful Experiments.
There is a new American Institute of Physics site on my hero Rutherford. There is also the Rutherford site maintained by his biographer John Campbell.
There is a nice book by David Bodanis called E=mc2 (naturally) which dissects, in a very entertaining manner, each of the terms (including, the most important one “=”) in Einstein’s most famous equation. See also Fermilab Today from July 5, 2013 for another discussion of the famous equation. There are further discussions in Fermilab Today about “Proving special relativity” – episode 1 – Friday, March 21, 2014 and episode 2 – April 4, 2014.
There is a special issue of Nature on The Quantum Atom which explores “the origin and legacy of Niels Bohr’s radical view of the nuclear atom, published one hundred years ago.” We can now “see” the Bohr orbitals as discussed in Direct view of atomic orbitals (June, 2013), ‘Quantum microscope’ peers into the hydrogen atom, and A New Look at the Hydrogen Wave Function (May, 2013) or watch electrons in motion as summarized in Electron spectroscopy: Not just snapshots, real movies (July, 2013). There is also the theoretical question about how big atoms can be which is covered in Theoretical physics: Sizing up atoms.
The foundations of the quantum world are still hotly debated. For discussions of this have a look at: The Oxford Questions on the foundations of quantum physics (July, 2013), Science and Philosophy: A Love-Hate Relationship (July, 2013), and Einstein as armchair detective: The case of stimulated radiation (July, 2013). See also A Quantum of Solace – Timeless Questions About the Universe. Entanglement and the Uncertainty Principle are always hot topics. See, for example, Measurement Uncertainty: Reply to Critics (February, 2014), Proof mooted for quantum uncertainty (June, 2013), Spooky action gets collective (June, 2013), Quantum uncertainty not all in the measurement (September, 2012), Experimental demonstration of a universally valid error-disturbance uncertainty relation in spin measurements (January, 2012), Quantum theorem shakes foundations (November, 2011), and A quantum take on certainty (June, 2011).
Or how about the lowly photon. Read here for the unlikely origin of its name. It is still being studied, as evidenced by the July, 2013 articles How Stable is the Photon? and Detection of single photons via quantum entanglement.
You can read a reconstruction of a lecture Einstein gave on the equivalence of mass and energy in Pittsburgh in 1934. Included in the article this picture of Einstein lecturing that was in the newspaper.
See how Albert Einstein did on his performance review at the patent office in Bern for the year 1905.
Ride a relativistic rocket! Physicists at the Australian National University have created a computer program called Real Time Relativity that “allows the user to fly through a virtual world governed by relativistic physics.” You can download the program from here.
I also highly recommend the book Einstein’s Dreams by Alan Lightman who is John E. Burchard Professor of Science and Writing and senior lecturer in physics at the Massachusetts Institute of Technology. The book is a beautifully lyrical, thoroughly entertaining, and wonderfully short, meditation on time through the artifice of imagining the daydreams of Einstein in 1905. The book has spawned a theatrical adaptation, performed by Raleigh, NC’s Burning Coal Theater Productions, which garnered very good reviews.
There is has always been a lot of contention about the central principle of the Special Theory of Relativity – namely, that the speed of light in vacuum is a constant independent of the source and receiver relative speed. Further, maintaining causality in Special Relativity requires that nothing can go faster than the speed of light in a vacuum and many attempts have been made to circumvent this, thus obtaining “superluminal” speeds. For example, see the article “ Cosmic Laws Like Speed of Light Might Be Changing“, where the possibility that the speed of light has changed value over time is discussed. A few years ago a number of experiments involving light propogation through dense media generated a lot of controversy and juicy headlines like “Light Pulses Flout Sacrosanct Speed Limit” (2002 – note the website), “Faster than a Speeding Light Wave” (2000), and “Laser Smashes Light-speed Record” (2000). Controversy also surrounded a paper in Nature bearing the innocent sounding title of “Gain-assisted superluminal light propagation.” The abstract contained the line, “The observed superluminal light pulse propagation is not at odds with causality …” although you wouldn’t know it based on some of the media coverage about it. This is nothing more than the old group versus phase velocity confusion according to Bob Park in What’s New.
The fascination with superluminal speeds is that it is related to the least understood subject in physics (and philosophy) – time. The onset of the new millenium produced a renewed fascination with time. You can take A Walk Through Time, a site on the evolution of time measurement from The National Institute of Standards and Technology (NIST) in the U.S. The article Seeing Faster by James Gleick in the New York Times Magazine gives a fascinating glimpse into how flash photography has changed our perception of time. The site also includes plenty of interesting links. There seems a particular fascination with time travel including “Time Travel” from NOVA as well as a site with “explanations” of relatvity and time travel.
- On the Electrodynamics of Moving Bodies [PDF] (or, if you prefer, in the original German – Zur Elektrodynamik bewegter Korper) (June 30, 1905) Albert Einstein
- Does the Inertia of a Body Depend upon its Energy-Content? [PDF] (September 27, 1905) Albert Einstein
- Note on the Spectral Lines of Hydrogen (1885) by Johann Jacob Balmer.
- On the Relative Motion of the Earth and the Luminiferous Ether (1887) by Albert Michelson(with Edward W. Morley)
- Cathode Rays (1897 paper on the discovery of the electron) by J. J. Thomson.
- On a New Kind of Rays (1895 paper on the discovery of X-rays) by Wilhelm Conrad Röntgen.
- The Scattering of the alpha-Particles by Matter (1910) by Hans Geiger.
- The Scattering of the alpha and beta Rays and the Structure of the Atom (1911) by Ernest Rutherford.
- On the Constitution of Atoms and Molecules (1913) by Neils Bohr.
- A Quantum Theory of the Scattering of X-Rays by Light Elements (1923) by Arthur Holly Compton
Not only has there been renewed interest in the speed of light but there has also been an explosion of interest in the brain of the man who made c a universal constant. You could see Samples of Albert Einstein’s brain on display at the Mutter Museum in 2011. And Albert Einstein’s brain continues to fascinate – in Hamilton (2015). In 1999, researchers at McMaster University concluded that Einstein really was smarter than the rest of us. Specifically, “the parietal region of his [Einstein’s] brain, the area thought to be related to mathematical reasoning, was found to be 15 per cent wider than average.” For complete coverage of the rather interesting history of the travels of Einstein’s brain (after his death, of course), have a look at What Became of Albert Einstein’s Brain? There are also a number of books on the travels of his brain including Driving Mr. Albert which was the cover review for the July 30, 2000, New York Times Review of Books (see also the review in the Globe & Mail) as well as Possessing Genius: The True Account of the Bizarre Odyssey of Einstein’s Brain. The story is covered in Chapter 14 of Postcards from the Brain Museum. There’s even a children’s book called Nibbling on Einstein’s Brain. Einstein’s Brain is the source of much art including a 1994 documentary Relics: Einstein’s Brain which chronicles the quixotic search for the brain by a Japanese professor, a folk album, and an art-science collaboration called the einstein’s brain project.
- Who says that relativistic effects aren’t relevant to our everyday world! A while ago I put a link to Santa at Nearly the Speed of Light, the article “explaining” how the answer to that age old question, “Just how does Santa Claus get to all of those homes in one night?”, lies in the Special Theory of Relativity. There was actually a challenge to the physics of the article which is gently responded to in Santa’s World Revisited, an article in the May, 2000 issue of FermiNews, the newsletter from Fermilab, the high energy particle accelerator near Chicago. In the article is a link to a website where there are animations of how, for example, the Eiffel Tower would look if you passed by at 90% the speed of light. It’s worth a look.
- Check out the letter to the editor by Cyril E. Challice, Professor Emeritus, University of Calgary, that was in the March 2000 issue of Physics in Canada. It gives an interesting Canadian twist to the story of the observation of the wave nature of the electron by Davisson and Germer.
- There are various online history “exhibits” from the American Institute of Physics including:
- You can also check out Heisenberg’s first paper or read about Niels Bohr’s letters to his family and his fiancee in the years 1910-1912 – Love, Literature, and the Quantum Atom.
- The Experimental Evidence link from the Particle Adventure is a very nice web-based description of the experimental origins of quantum physics, and in particular of Rutherford’s groundbreaking experiments on the structure of matter. There is also All About Light from Fermilab which, through a discussion of light, cover much of the course material.
- In honour of the centenary of the American Physical Society, the journal Reviews of Modern Physics devoted an entire issue to reviews of physics of the twentieth century. The following articles seemed particularly relevant for this course:
- Also, there is a new journal concentrating on the history of physics called Physics in Perspective. The inaugral issue had an interesting article entitled “Why was Relativity Accepted?” [PDF] which gives some of the social and historical context of the times. There is also an article entitled “Dispersion in the Ether: Light over the Water” which concerns a history of the measurements of the speed of light. Finally, there is an interesting story about the history of the quantum called Planck, the Quantum, and the Historians.
- There are a lot of good websites devoted to Einstein. Besides the AIP History site given already, there is Albert Einstein Online. There is also Einstein Revealed from the science program NOVA. The complete text of Einstein’s Relativity – The Special and General Theory can be found here.
Articles from Quanta magazine, Physics Update, Physics World News, Physical Review Focus, PhysOrg Physics News, Science News, and other sites on topics related to Special Relativity and the foundations of Quantum Mechanics.
- How Stephen Hawking flip-flopped on whether the Universe has a beginning – April, 2023
- Light waves squeezed through ‘slits in time’ – April, 2023
- Heartbeat May Shape Our Perception of Time – March, 2023
- New Accuracy Record for Molecular Lattice Clock – March, 2023
- Quantum on a Microgram Scale – March, 2023
- Quantum mechanics: how the future might influence the past – March, 2023 [accompanying arXiv article Why engtanglement?]
- Stephen Hawking’s final theorem turns time and causality inside out – March, 2023
- Why we’re trapped in short-term thinking and how to take the long view – March, 2023
- How Our Reality May Be a Sum of All Possible Realities – February, 2023
- How Quantum Physicists ‘Flipped Time’ (and How They Didn’t) – January, 2023
- The Sounds of Atoms – January, 2023
- Arthur Compton and the mysteries of light – December, 2022
- Physicists Create a Holographic Wormhole Using a Quantum Computer – November, 2022
- Creating quantum-entangled networks of atomic clocks and accelerometers – November, 2022
- How to Think About Relativity – November, 2022
- Why This Universe? A New Calculation Suggests Our Cosmos Is Typical – November, 2022
- Keeping time with highly charged ions – November, 2022
- How the Stern–Gerlach experiment made physicists believe in quantum mechanics – November, 2022
- Experiments Spell Doom for Decades-Old Explanation of Quantum Weirdness – October, 2022
- Chinese team syncs clocks over record distance using lasers – October, 2022
- Schrodinger’s buses spotted in Bristol – September, 2022
- Physicists Rewrite a Quantum Rule That Clashes With Our Universe – September, 2022
- From atomic to nuclear clocks – September, 2022
- Knitting space–time out of quantum entanglement – September, 2022
- Quantum theory and the Nobel prize – August, 2002
- Turning Back Time on Space – May, 2022
- Physicists Pin Down How Quantum Uncertainty Sharpens Measurements – May, 2022 [paper]
- Physicists Rewrite the Fundamental Law That Leads to Disorder – May, 2022
- Pondering the Bits That Build Space-Time and Brains – April, 2022
- A century ago, Alexander Friedmann envisioned the universe’s expansion – May, 2022
- Giant leap toward quantum internet realized with Bell state analyzer – March, 2022
- All-optical attoclock for imaging tunnelling wavepackets – March, 2022
- Quantum technology could make charging electric cars as fast as pumping gas – March, 2022
- 100 Years Ago, a Quantum Experiment Explained Why We Don’t Fall through Our Chairs – March, 2022
- How world’s most precise clock could transform fundamental physics – February, 2022
- ‘From Data to Quanta’ defends Niels Bohr’s view of quantum mechanics – February, 2022
- The conundrum at the heart of quantum physics – and how philosophers of science can help – December, 2021
- Could a conventional chair be a quantum measuring device? – November, 2021
- The second quantum revolution – January, 2022
- Quantum entanglement boosts accuracy of industrial quality inspections – January, 2022
- ‘Strange history’ of photons challenges our understanding of quantum interactions – January, 2022
- Electron’s wave nature constructed in the lab at last – January, 2022
- Gravitational Waves Should Permanently Distort Space-Time – December, 2021
- Mathematicians Transcend Geometric Theory of Motion – December, 2021
- A double-slit experiment without slits – December, 2021
- The only known pulsar duo sheds new light on general relativity and more – December, 2021
- What We Will Never Know – November, 2021
- Deuterium molecules in superposition act as slits for classic quantum experiment – November, 2021
- Special relativity keeps digital identities secure – November, 2021
- Quantum Cheshire cats could have a travelling grin – October, 2021
- An Ultra-Precise Clock Shows How to Link the Quantum World With Gravity – October, 2021
- One Lab’s Quest to Build Space-Time Out of Quantum Particles – September, 2021
- An atomic clock measured how general relativity warps time across a millimeter – October, 2021
- Super-precise clock tech wins $3 million physics Breakthrough Prize – September, 2021
- Can we see quantum correlations at the macroscopic scale? – September, 2021
- Wave-particle duality quantified for the first time – September, 2021
- Approaching the Heisenberg limit – July, 2021
- A Macroscopic Probe of Quantum States – July, 2021
- Antimatter from laser pincers – July, 2021
- Trapped-ion clock passes orbital test, Keeping time in space – July, 2021
- Detecting mid-infrared light, one photon at a time – June, 2021
- Evading the uncertainty principle in quantum physics – May, 2021
- Researchers use optical data to reveal the basic structure of spacetime in rotating frames – May, 2021
- Is the past (and future) there when nobody looks? – May, 2021
- General relativity passes crucial neutron-star test – May, 2021
- Vibrating drumheads are entangled quantum mechanically – May, 2021
- Quantum Double-Slit Experiment Offers Hope for Earth-Size Telescope – May, 2021
- Quantum Entanglement Has Now Been Directly Observed at a Larger Macroscopic Scale – May, 2021
- Three top atomic clocks are compared with record accuracy – March, 2021
- The Entangled Dance of Atom Beams – February, 2021
- There’s no way to measure the speed of light in a single direction – January, 2021
The One-Way Speed of Light and the Milne Universe – January, 2021 - Rippling graphene harvests thermal energy – October, 2020 (this is about harnessing Brownian motion)
- Physicists place fresh limits on gravity’s role in wavefunction collapse – October, 2020
- Could Schrodinger’s cat exist in real life? – October, 2020
- Toward a Perfect Single-Photon Source – October, 2020
- Mind and space bending physics on a convenient chip – October, 2020
- A new interpretation of quantum mechanics suggests that reality does not depend on the person measuring it – October, 2020
- One of quantum physics’ greatest paradoxes may have lost its leading explanation – September, 2020
- Ticking Toward a Nuclear Clock – September, 2020
- Quantum-tunnelling time is measured using ultracold atoms – July, 2020
- Finding a consistent constant – July, 2020
- Gamma Rays Provide New Quantum Gravity Constraint – July, 2020
- Tabletop device might snare gravitational waves using tiny diamonds – July, 2020
- New design for ‘optical ruler’ could revolutionize clocks, telescopes, telecommunications – June, 2020
- Levitated timepiece sets new benchmark – June, 2020
- Physicists create quantum-inspired optical sensor – June, 2020
- What a bike moving at near the speed of light might look like to a human observer – June, 2020
- A ‘pause button’ for light particles – June, 2020
- Ion Recoil from Photon Beam Observed – June, 2020
- Transportable atomic clocks achieve laboratory precision – May, 2020
- Locating Objects with Quantum Radar – May, 2020
- Schrödinger’s original struggles with a complex wave function – May, 2020
- Does Time Really Flow? New Clues Come From a Century-Old Approach to Math – April, 2020
- Seven formulations of the kinematics of special relativity – March, 2020
- Double slits with single atoms – February, 2020
- Classical time crystals could exist in nature, say physicists – February, 2020
- Levitated Nanoparticle Goes Quantum – January, 2020
- Timing Molecular Motion with an Optical Stopwatch – December, 2019
- Timing Molecular Motion with an Optical Stopwatch – December, 2019
- “Tweezer Clock” Offers New Possibilities in Timekeeping – December, 2019
- Quantum Physics is No More Mysterious Than Crossing the Street: A Conversation with Chris Fuchs – November, 2019
- Lighten the dark – November, 2019
- New optical timekeeper is 10 times more reliable than caesium atomic clocks – October, 2019
- Interference of clocks: A quantum twin paradox – October, 2019
- Graphene origami reaches quantum precision – September, 2019
- A relative revolution – reviews of four new books on Einstein and his theory of relativity – September, 2019
- The mysteries of quantum mechanics in graphic-novel form (Author Q & A: How to write a graphic novel about quantum mechanics) – September, 2019
- Quantum Darwinism, an Idea to Explain Objective Reality, Passes First Tests – July, 2019
- Physicists can predict the jumps of Schrodinger’s cat (and finally save it) – June, 2019
- Three ways to travel at (nearly) the speed of light – May, 2019
- Researchers successfully sent a simulated elementary particle back in time – May, 2019
- Stabilizing the no-boundary proposal sheds light on the universe’s quantum origins – May, 2019
- First demonstration of antimatter wave interferometry – May, 2019
- 100 years on: the picture that changed our view of the universe – May, 2019
- Turbulence in The Starry Night – April, 2019
- Time-reversal violation may explain abundance of matter over antimatter, physicist says – April, 2019
- Getting a big look at tiny particles – April, 2019
- Can the scientist play a role in the laws of physics? – January, 2019
- The quantum heretics – December, 2018
- Quantum foundations still not cemented – November, 2018
- Study finds flaw in emergent gravity – August, 2018
- Quantum stopwatch stores time in a quantum memory – June, 2018
- Galileo’s free-falling objects experiment passes space test further proving equivalence principle – December, 2017
- Experiment shows that arrow of time is a relative concept, not an absolute one – December, 2017
- Relativity Survives Scrutiny, Again – November, 2017
- Violation of the exponential decay law discovered in open quantum systems – October, 2017
- Plug-and-Play Photon Source – August, 2017
- Graphene Helps Catch Light Quanta – August, 2017
- Quantum superposition still adds up in three-slit experiment – August, 2017
- Measuring the Tidal Force on a Particle.F爾s Matter Wave – May, 2017
- Physicists breeding Schroedinger cat states – May, 2017
- Shedding light (and dark) on quantum probabilities – April, 2017
- Atomic clocks make best measurement yet of relativity of time – March, 2017
- Optical clocks hit the road, Transportable Clocks Move with the Times – February, 2017
- Cryogenic test probes Einstein’s equivalence principle, general relativity, and spacetime ‘foam’ – January, 2017
- Still no violation of Lorentz symmetry, despite strongest test yet – December, 2016
- Dual optical clock races towards peak precision – December, 2016
- Ghost images taken using pairs of atoms – December, 2016
- Quantum membranes for ultraprecise mechanical measurements – December, 2016
- Weak-value-based metrology surpasses classical limit – December, 2016
- Exotic insulator may hold clue to key mystery of modern physics – December, 2016
- Quantum Gravity’s Time Problem – December, 2016
- Cosmic experiment is closing another Bell test loophole – December, 2016
- Nobody Has Proved Einstein Wrong About Relativity, But People Are Still Trying – November, 2016
- Synchronizing optical clocks to one quadrillionth of a second – October, 2016
- JILA’s superradiant laser may one day boost atomic clocks – October, 2016
- Cause and Effect Doesn’t Actually Exist on a Particle Level – October, 2016
- Special relativity helps keep a secret for 24 hours – October, 2016
- Optical link connects atomic clocks over 1400 km of fibre – August, 2016
- Entangled Hawking radiation spotted in analogue black hole – August, 2016
- Towards a nuclear clock – July, 2016
- A new, exquisitely precise determination of Planck’s constant – July, 2016
- A Relativistic View of a Clumpy Universe – June, 2016
- The freest of free falls, Paving the Way to Space-Based Gravitational-Wave Detectors – June, 2016
- Experimental test verifies Heisenberg’s measurement uncertainty principle – June, 2016
- Relativity Gets Thorough Vetting from LIGO – May, 2016
- Schrodinger’s cat lives and dies in two boxes at once – May, 2016
- Position Detector Approaches the Heisenberg Limit – May, 2016
- Attracting New Ideas for Measuring to Big G – May, 2016
- Deep space experiment could measure the gravitational constant with nearly 1,000 times improvement in accuracy (Update) – May, 2016
- Could optical clocks redefine the length of a second? – May, 2016
- Tiny optical frequency clock measures time accurately to 270 quintillionths of a second – May, 2016
- Next Generation Clock Networks – May, 2016
- Physicists make first observation of the pushing pressure of light – May, 2016
- Physicists discover a new form of light – May, 2016
- One-Way Quantumness – April, 2016
- A Single-Level Electron Turnstile – April, 2016
- Scientists take next step towards observing quantum physics in real life – April, 2016
- Better tests for Schrodinger cats – April, 2016
- The ‘great smoky dragon’ of quantum physics, Delayed-choice gedanken experiments and their realizations – March, 2016
- 1921 NY Times | Catching Einstein in an Error – March, 2016
- How to build a time machine – February, 2016
- Freefall space cubes are test for gravitational wave spotter – February, 2016
- Gravity on the balance – February, 2016
- Physicists investigate the structure of time, with implications for quantum mechanics and philosophy – February, 2016
- Journey from Classical to Quantum in Two Dimensions – February, 2016
- Black Holes – February, 2016
- Quantum Links in Time and Space May Form the Universe’s Foundation – February, 2016
- Underground ring lasers will put general relativity to the test – January, 2016
- Testing General Relativity in a Black Hole’s Shadow – January, 2016
- Closing the Door on Einstein and Bohr’s Quantum Debate – December, 2015
- The quantum source of space-time – November, 2015
- Arch and scaffold: How Einstein found his field equations – November, 2015
- Testing Gravity On Solar System Scales – November, 2015
- On the Anniversary of Two Scientific Revolutions – November, 2015
- A Century Ago, Einstein’s Theory of Relativity Changed Everything – November, 2015
Albert Einstein and Relativity in the Pages of The (NY) Times – November, 2015 - Researcher’s work offers more proof of Einstein’s general theory of relativity – November, 2015
- New law implies thermodynamic time runs backwards inside black holes – November, 2015
- Physicists make first observation of the pushing pressure of light – November, 2015
- How Politics Shaped General Relativity – November, 2015
- New derivation of pi links quantum physics and pure math – November, 2015
- Nuclear Spin Points out Arrow of Time – November, 2015
- Einstein’s Biggest Triumph: A Century of General Relativity (Op-Ed) – November, 2015
- The Light-Beam Rider – October, 2015
- Standing the Test of Time (and Space) – October, 2015
- Self-interfering clock – October, 2015
- A Schrodinger’s cat -type effect entangles collective excitations in a semiconductor nanostructure – October, 2015
- Putting Quantum Systems to Work – October, 2015
- Landmarks – Superconductor Quantizes Magnetic Field – October, 2015
- Chasing Wormholes: The Hunt for Tunnels in Space-Time – October, 2015
- Sorry, Einstein. Quantum Study Suggests ‘Spooky Action’ Is Real – October, 2015
- General Relativity: 100 Years Old And Still Full Of Surprises – October, 2015
- Squeezing mechanical motion – October, 2015
- Perfectly accurate clocks turn out to be impossible – October, 2015
- Most precise test of Lorentz symmetry for the photon finds that the speed of light is indeed constant – September, 2015
- New law implies thermodynamic time runs backwards inside black holes – September, 2015
- Could ‘Schrodinger’s bacterium’ be placed in a quantum superposition? – September, 2015
- Testing Relativity with Planetary Motion – September, 2015
- More evidence to support quantum theory’s “spooky action at a distance” – August, 2015
- What Has Quantum Mechanics Ever Done For Us? – August, 2015
- Tiny black holes could trigger collapse of universe – except that they don’t – August, 2015
- Tiny particles dance around each other in near-zero gravity – August, 2015
- Plan for supersized entanglement is unveiled by physicist – August, 2015
- Gravity: Wanna be quantum – July, 2015
- Time-symmetric formulation of quantum theory provides new understanding of causality and free choice – July, 2015
- “Psi” in the sky – July, 2015
- Quantum Cheshire Cat effect may be explained by standard quantum mechanics – July, 2015
- Magic moments with John Bell – July, 2015
- New method of quantum entanglement vastly increases how much information can be carried in a photon – July, 2015
- Energy Boost from Black Holes – July, 2015
- Six Things Everyone Should Know About Quantum Physics – July, 2015
- Gravitational Lensing (Fermilab video) – June, 2015
- Why the Big Bang’s Light May Have a Tilt – June, 2015
- Researchers find the macroscopic Brownian motion phenomena of self-powered liquid metal motors – June, 2015
- The challenge of building a better atomic clock and why it matters – June, 2015
- Does time dilation destroy quantum superposition?, Relativity’s time dilation may limit the quantum world, How gravity kills Schrodinger’s cat – June, 2015
- When science gets ugly -the story of Philipp Lenard and Albert Einstein – June, 2015
- Einstein saves the quantum cat – June, 2015
- Getting the measure of matter – June, 2015
- Second thoughts: Is a tiny addition in time too much? – June, 2015
- Hyper-precise atomic clocks face off to redefine time – June, 2015
- Do atoms going through a double slit “know” if they are being observed? – May, 2015
- Cavity with Iron Nuclei Slows Down X Rays – May, 2015
- Quantum physics: What is really real? – May, 2015
- Fighting for time – May, 2015
- Quantum Darwinism, classical reality, and the randomness of quantum jumps – May, 2015
- Squeezed quantum cats – May, 2015
- Quantum physics on tap: Nano-sized faucet offers experimental support for longstanding quantum theory – May, 2015
- Dark Matter Is Necessary For The Origin Of Life – April, 2015
- Einstein’s Dice and Schrodinger’s Cat – Book Review, New York Times, May 4, 2015
- Examining Einstein – precise experiments using lasers in space – April, 2015
- Why do measurements of the gravitational constant vary so much? – April, 2015
- About time: New record for atomic clock accuracy – April, 2015
- An ultrafast camera films light at light speed – April, 2015
- Matter-wave metrology meets cavity optics – April, 2015
- Absence of gravitational-wave signal extends limit on knowable universe – Fermilab Today, April 9, 2015
- Our Cosmic Selves – April, 2015
- Our flat universe – April, 2015
- Better ‘cosmic candles’ to illuminate dark energy – April, 2015
- ALMA sees Einstein ring in stunning image of lensed galaxy – April, 2015
- Balls and feathers – April, 2015
- Physicists propose method to measure variations in the speed of light – April, 2015
- When quantum mechanics and international relations collide – March, 2015
- New way to calculate how long it would take to fall through a hole in the Earth – March, 2015
- A stellar source of lithium – March, 2015
- Team finds `tipping point’ between quantum and classical worlds – March, 2015
- Quantum experiment verifies Einstein’s `spooky action at a distance’ – March, 2015
- Have alien civilizations built cosmic accelerators from black holes? – March, 2015
- Confirming Einstein, scientists find `spacetime foam’ not slowing down photons from faraway gamma-ray burst – March, 2015
- Shining an X-Ray torch on quantum gravity – March, 2015
- Detection of mini black holes at the LHC could indicate parallel universes in extra dimensions – March, 2015
- Cold Atoms, Meet Flux Quanta – March, 2015
- Loophole in theory offers insight into the ‘lithium problem’ – March, 2015
- Einstein’s most famous equation – March, 2015
- Superconductors Could Help Physicists Find `Gravity Particles’ – March, 2015
- Nanospheres cooled with light to explore the limits of quantum physics – March, 2015
- Quantum gravity: Spacetime fuzziness in focus – March, 2015
- Did We Really See Light Acting as a Particle and a Wave at Once? – March, 2015
- Gravitational lensing creates ‘Einstein’s cross’ of distant supernova – March, 2015
- The dark side of cosmology – March, 2015
- Quantum Particles Spotted in Less Time – March, 2015
- Cavity gravimetry – March, 2015
- Neutrino Test of Lorentz Invariance – March, 2015
- Quasar spectrum shines a new light on unchanged fundamental constants – February, 2015
- A Casimir Effect Caused by Gravity – February, 2015
- Quantum Mechanics Could Improve Radar – February, 2015
- Big Bang, Deflated? Universe May Have Had No Beginning – February, 2015
- The Reality of Quantum Weirdness – February, 2015
- General Relativity’s Big Year? – February, 2015
- Disorder Rules the Universe – February, 2015
- Researchers describe the wavefunction of Schroedinger’s cat – February, 2015
- Quantum Bending of Light – February, 2015
- Schrodinger’s cat gets a reality check – February, 2015
- Quantum mechanical behaviour at the macroscale – February, 2015
- Quantum computer as detector shows space is not squeezed – January, 2015
- Scientists set quantum speed limit – January, 2015
- Black holes do not exist where space and time do not exist, says new theory – January, 2015
- Nailing the half-life of iron-60 – January, 2015
- Speed of light not so constant after all – January, 2015
- Werner Heisenberg and Carl Friedrich Freiherr von Weizsacker: A Fifty-Year Friendship – January, 2015
- Albert Einstein’s Magic Mountain: An Aarau Education – January, 2015
- “Galileo’s Machine”: Late Notes on Free Fall, Projectile Motion, and the Force of Percussion (ca. 1638 – 1639) – December, 2014
- Quantum physics just got less complicated – December, 2014
- Motion of two electrons in helium atom can be imaged and controlled with attosecond-timed laser flashes – December, 2014
- New technique nails distance to supermassive black hole, A geometrically determined distance to a far-off black hole – December, 2014
- New revelations on dark matter and relic neutrinos – December, 2014
- Science powerhouses unite to help search for gravitational waves – December, 2014
- Heisenberg’s uncertainty principle and Wi-Fi – November, 2014
- How Gravity Explains Why Time Never Runs Backward – November, 2014
- Plasmons convert light into a voltage – November, 2014
- Extragalactic Rydberg atoms – November, 2014
- Arrow of Time Emerges in a Gravitational System – November, 2014
- Dusting off the Cosmic-Gravitational-Wave signal – November, 2014
- The rise of astrostatistics – November, 2014
- A quantum world arising from many ordinary ones – October, 2014
- Rydberg atoms: Two to tango – October, 2014
- When parallel worlds collide, quantum mechanics is born – October, 2014
- A Shield for Rydberg Atoms – October, 2014
- The Strangest Theory We Know Is True – October, 2014
- Superposition revisited: Proposed resolution of double-slit experiment paradox using Feynman path integral formalism – October, 2014
- Experiment makes Schrodinger’s cat choose -things can be real, or certain, but not both – September, 2014
- The Franck-Hertz Experiments, 1911 – 1914 Experimentalists in Search of a Theory – September, 2014
- One Very Cold Atom – September, 2014
- Researchers developing one of the world’s most accurate methods for generating a specified number of photons – September, 2014
- Kilogram celebrates its 125th birthday – September, 2014
- Quantum tornadoes in a nanodroplet – September, 2014
- Curvy Photon Trajectories Could Be Detectable, Photons weave their way through a triple slit – September, 2014
- Diamond and Silicon Get Entangled – September, 2014
- Uncovering the forbidden side of molecules – September, 2014
- Relativity is Right on Time, Again – September, 2014
- ‘Solid’ light could compute previously unsolvable problems – September, 2014
- Fluid mechanics suggests alternative to quantum orthodoxy – September, 2014
- A more fundamental International System of Units – September, 2014
- The Expanding Universe: Dark Energy – September, 2014
- The search for Newton’s constant – September, 2014
- The Dayside : Rutherford, Bohr, and the rise of Nature – September, 2014
- What time is it in the universe? – August, 2014
- Picturing Schrodinger’s cat: Quantum physics enables revolutionary imaging method – August, 2014
- Duality principle is ‘safe and sound’: Researchers clear up apparent violation of wave-particle duality – August, 2014
- Do we live in a 2-D hologram?, A physics experiment might soon tell us if we’re living in a 2D hologram – August, 2014
- The Smallest Possible Scale in the Universe – August, 2014
- Quantum Particles Take the Road Most Traveled – August, 2014
- Particle Measurement Sidesteps the Uncertainty Principle – August, 2014
- The Quantum Cheshire Cat: Can neutrons be located at a different place than their own spin? – July, 2014
- New correction to speed of light could explain SN1987 neutrino burst, Apparent correction to the speed of light in a gravitational potential – July, 2014
- Paradoxical pigeons are the latest quantum conundrum,
- Physicists discuss quantum pigeonhole principle – July, 2014
- Direct Test of Cosmic Acceleration – July, 2014
- Test of equivalence principle searches for effects of spin-gravity coupling – July, 2014
- Physicist suggests speed of light might be slower than thought – July, 2014
- Particle, meet wave: Optical qubit technique squeezes photons to bridge discrete and continuous quantum regime – July, 2014
- Entanglement between particle and wave-like states of light resembles Schrodinger’s cat experiment (Update) – July, 2014
- Entangled clocks could provide accurate world time standard – July, 2014
- Optomechanical Sensing of Spontaneous Wave-Function Collapse – July, 2014
- Still Exerting a Hold on Science – June, 2014
- Space-based experiment could test gravity’s effects on quantum entanglement – May, 2014
- Sending entangled beams through fast-light materials – May, 2014
- A quantum accelerometer is being built for navy submarines – May, 2014
- Research team claims to have accurately ‘teleported’ quantum information ten feet – May, 2014
- Scientists discover how to turn light into matter after 80-year quest – May, 2014
- Free Falling Matter Waves – May, 2014
- Tricking the uncertainty principle – May, 2014
- Physicist suggests some types of wormholes may stay open long enough to send a photon through – May, 2014
- Time’s Arrow Traced to Quantum Source – April, 2014
- Liquid spacetime: A very slippery superfluid, that’s what spacetime could be like – April, 2014
- Light Nearly Stopped in a Waveguide – April, 2014
- First discovery of double star that brightens during eclipse – April, 2014
- Reflecting on an Alternative Quantum Theory – April, 2014
- Thermodynamics Confronts Quantum Mechanics – April, 2014
- Philosopher untangles Einstein senility controversy – April, 2014
- Can you drive fast enough to avoid being clocked by speed cameras? – March, 2014
- QBism puts the scientist back into science – March, 2014
- Be here now – March, 2014
- Relativity shakes a magnet – March, 2014
- Certainty about quantum uncertainty – March, 2014
- Fundamental constants: The teamwork of precision – February, 2014
- Einstein’s lost theory uncovered – February, 2014
- The standard model’s greatest triumph – February, 2014
- The Dark Matter Poltergeist – February, 2014
- Accuracy of the NPL caesium fountain clock further improved – February, 2014
- An analysis of Einstein’s 1931 paper featuring a dynamic model of the universe, Einstein’s conversion from a static to an expanding universe – February, 2014
- Black hole bombs: Are they dark matter in disguise? – February, 2014
- Optical-lattice clock sets new standard for timekeeping – February, 2014
- Stephen Hawking: ‘There are no black holes’, Grey is the new black hole: is Stephen Hawking right? – January, 2014
- Einstein’s curve ball – January, 2014
- Coming soon: Rydberg the movie – January, 2014
- Don’t stop the quest to measure Big G – January, 2014
- New value for the Planck constant may hasten electronic kilogram – January, 2014
- Quantum-to-classical transition may be explained by fuzziness of measurement references – January, 2014
- Why Einstein will never be wrong – January, 2014
- Towards perfect control of light waves – January, 2014
- Pulsar and companions will put general relativity to the test – January, 2014
- Smooth or grainy? New paper reviews research on the grain of space-time – December, 2013
- Astronomers discover furthest gravitational lens – December, 2013
- Tales of 1001 Atoms – December, 2013
- How hypergravity impacts electric arcs – December, 2013
- New work gives credence to theory of universe as a hologram – December, 2013
- In a “Rainbow” Universe Time May Have No Beginning – December, 2013
- Collapse of the universe is closer than ever before – December, 2013
- What Can we Say about a Photon’s Past? – December, 2013
- Expanding universe can emerge in remarkably simple way, scientists say – December, 2013
- Creation of entanglement simultaneously gives rise to a wormhole – December, 2013
- Teaching matter waves new tricks: Making magnets with ultra cold atoms – November, 2013
- Discrepancy in Neutron Lifetime Still Unresolved – November, 2013
- No qualms about quantum theory – November, 2013
- Teaching matter waves new tricks: Making magnets with ultracold atoms – November, 2013
- Physicists ask photons ‘Where have you been?’ – November, 2013
- Physicists reveal a quantum Cheshire cat – November, 2013
- Seeing a photon without absorbing it – November, 2013
- Relativity revives quantum secrecy scheme – November, 2013
- Uncertainty reigns over Heisenberg’s measurement analogy – November, 2013
- Can an oil bath solve the mysteries of the quantum world? – November, 2013
- Rescuing Heisenberg – October, 2013
- A Tripod of Light – October, 2013
- What’s Inside a Black Hole’s Horizon? – October, 2013
- Testing times for relativity – October, 2013
- Hairy black hole could show gaps in Einstein’s theory – October, 2013
- Rescuing Heisenberg – October, 2013
- Physicists prove Heisenberg’s intuition correct – October, 2013
- Feynman wasn’t joking: Modeling quantum dynamics with ground state wavefunctions – October, 2013
- Rethinking particle dynamics – October, 2013
- A Jewel at the Heart of Quantum Physics – September, 2013
- Quantum quest – September, 2013
- A startling value for gravitation – September, 2013
- Cross-Country Time Keeping – September, 2013
- Can’t Beat These New Clocks – September, 2013
- Classical vs Quantum – September, 2013
- An Uncertain Big G – September, 2013
- Quantum steps towards the Big Bang – September, 2013
- Iron in the sun: A greenhouse gas for X-ray radiation – September, 2013
- Theorists bridge space-time rips – September, 2013
- Quantum inverted pendulum: Control scheme dynamically maintains unstable quantum system – August, 2013
- Star’s flicker reveals its surface gravity – August, 2013
- Ultracold Big Bang experiment successfully simulates evolution of early universe – August, 2013
- Physicist disentangles “Schrodinger’s cat” debate – August, 2013
- Theory of Einstein’s Proved Right – Again – August, 2013
- Another close look at “big G” – August, 2013
- Physicist proves impossibility of quantum time crystals – August, 2013
- NIST ytterbium atomic clocks set record for stability – August, 2013
- Big Bang Light Reveals Minimum Lifetime of Photons – August, 2013
- Black Holes + Wormholes = Quantum Answers – August, 2013
- Closing in on Einstein’s window to the universe – August, 2013
- Faster Than the Speed of Light? – July, 2013
- Experimental quest to test Einstein’s speed limit, Testing Relativity Using Earth’s Motion – July, 2013
- When fluid dynamics mimic quantum mechanics – July, 2013
- A proper understanding of the Davisson and Germer experiments for undergraduate modern physics course – July, 2013
- What if quantum physics worked on a macroscopic level? – July, 2013
- Attractive force arises from black-body radiation, say physicists , Blackbody radiation induces attractive force stronger than gravity – July, 2013
- Gravity Makes the Universe Classical – July, 2013
- Fundamental Constant Doesn’t Budge in High Gravity – July, 2013
- A Distant Second – June, 2013
- A cloak in time – June, 2013
- Niels Bohr between physics and chemistry – May, 2013
- General relativity passes a new test – May, 2013
- Photons test quantum paradox – April, 2013
- Black holes, quantum information, and the foundations of physics – April, 2013
- Edmund Stoner and the Bohr atom – April, 2013
- Getting around the ‘uncertainty principle’: Physicists make first direct measurements of polarization states of light – March, 2013.
- In praise of weakness – March, 2013
- 1932, a watershed year in nuclear physics – March, 2013
- Back to the beginning of quantum spacetime – March, 2013
- Black hole found spinning near the relativistic limit – February, 2013.
- Free-Falling Interferometry – February, 2013.
- Playing quantum tricks with measurements – February, 2013.
- Quantum physics mimics spooky action into the past – April, 2012.
- Are you certain, Mr. Heisenberg? New measurements deepen understanding of quantum uncertainty – January, 2012.
- Neutrons revive Heisenberg’s first take on uncertainty – January, 2012
- Sun puts relativity to the test – September, 2011.
- Time Travel without Regrets – February, 2011.
- Relativity starts your car and Relativity Powers Your Car Battery – January, 2011.
- Relativity comes down to Earth, Relativity with a human touch – September, 2010.
- Einstein, Bohr, And Ultimate Reality – August, 2010.
- 7.3 Billion Years Later, Einstein’s Theory Prevails – November, 2009.
- A 21st century Rutherford experiment – November, 2009.
- Quantum Mechanics: Do the Wave-particle – June, 2009.
- Exerting Better Control Over Matter Waves – March, 2009.
- Physicists Create Millimeter-sized ‘Bohr Atom’ – March, 2009 and June, 2008
- New Insights Into Quantum Mechanics: Unlocking Mysteries Of ‘Blinking’ Phenomena Of Fluorescent Molecules – July, 2008.
- Optical Clocks Get Better – April, 2008.
- Short Light – March, 2008.
- Unprecedented Spectroscopy Using the Best Ever Ruler for Light – January, 2008.
- High-Intensity Photoelectric Effect – December, 2007.
- Relativistic Thermodynamics – October, 2007.
- Time and Time Again – June, 2007.
- The Shortest Light Pulse Ever – May, 2007.
- Slowed Light Handed Off – February, 2007.
- Einstein’s Little Machine – September, 2006.
- Existence of Atoms Reaffirmed – June, 2006.
- Best Direct Test of E=mc2 – January, 2006.
- Superluminal Ultrasound? – October, 2005.
- Why Do We Reside in a Three-Dimensional Universe? – September, 2005.
- Fibres Control the Speed of Light – August, 2005.
- Light May Arise From Tiny Relativity Violations – June, 2005.
- The First Direct Measurement of Recoil Momentum – May, 2005.
- First Evidence For Entanglement of Three Macroscopic Objects – March, 2005.
- New Look for Classic Experiment – March, 2005.
- Evidence for Quantized Displacement – February, 2005.
- Looking at Electrons Without Touching – January, 2005.
- Is Special Relativity Wrong? – December, 2004.
- Good News for Causality – November, 2004.
- Pionium Atoms Arrive en Masse – October, 2004.
- Clock Synchronization With Entangled Photons – September, 2004.
- The World’s Smallest Atomic Clock – September, 2004.
- Newly Created Antihydrogen Atoms – August, 2004.
- Light Wave Outlasts Itself – May, 2004.
- ASACUSA Enters a New World of Precision – May, 2004.
- A Tiny Solar System After All – April, 2004.
- Physicists Move Closer to the Quantum Limit – April, 2004.
- Switching light on and off – December, 2003.
- Super-cool detector spots single photons October – , 2003.
- Biomolecule behaves like a wave – September, 2003.
- The Relativity of Time – September, 2003.
- Malleability of Spacetime – September, 2003.
- Light-Speed Submarine – July, 2003.
- Lorentz Symmetry Stays Intact – March, 2003.
- A New Limit on Photon Mass – February, 2003.
- Lorentz Violations? Not Yet – February, 2003.
- Topics pre-2003
Although the actual material covered in the course ends in 1925 with the birth of quantum mechanics, the various topics are still “living” issues in the sense that scientists continue to ponder and probe the foundations of relativity and quantum theory.[Be warned that these are NOT refereed papers so some of the conclusions reached here could be, and probably are, utter nonsense.]
- Resolving starlight: a quantum perspective – June, 2019
- Lorentz-symmetry test at Planck-scale suppression with nucleons in a spin-polarized 133Cs cold atom clock – December, 2016
- Sound clocks and sonic relativity – December, 2016
- Shadows over the speed of light – June, 2016
- Relativistic transformation of temperature and Mosengeil-Ott’s antinomy – June, 2016
- Relativistic mechanical-thermodynamical formalism — description of inelastic collisions – June, 2016
- Unification of Relativistic and Quantum Mechanics from Elementary Cycles Theory – June, 2016
- Gravity Tunnel Drag – June, 2016
- Nancy Cartwright and the Measurement Problem – June, 2016
- The Development of Elementary Quantum Theory from 1900 to 1927 – June, 2016
- Personal recollections: Frascati and the search for gravitational waves at the Istituto Nazionale di Fisica Nucleare (INFN) – April, 2016
- Uncertain for A Century: Quantum Mechanics and The Dilemma of Interpretation – April, 2016
- Single-Ion Atomic Clock with 3 X 10-18 Systematic Uncertainty – February, 2016
- A tabulation of the bound-state energies of atomic hydrogen – January, 2016
- Quantum Dynamical Relativity and the Nature of Spacetime – July, 2015
- Prospects for atomic clocks based on large ion crystals – July, 2015
- Can the time arrow be influenced by the dark energy? – June, 2015
- Comments On: A Universe From Nothing – May, 2014
- Communicating the Heisenberg uncertainty relations: Niels Bohr, Complementarity and the Einstein-Rupp experiments – May, 2015
- How superluminal motion can lead to backward time travel – May, 2015
- Matter-wave laser Interferometric Gravitation Antenna (MIGA): New perspectives for fundamental physics and geosciences – May, 2015
- Subtleties of the clock retardation – May, 2015
- Comment on “Measurements of Newton’s gravitational constant and the length of day” – May, 2015
- Greeks were right: critical comments on Qbism – May, 2015
- Yet another time about time – May, 2015
- The causal structure of Minkowski space time: possibilities and impossibilities of secure positioning – May, 2015
- Recent measurements of the gravitational constant as a function of time – May, 2015
- No information or horizon paradoxes for Th. Smiths – May, 2015
- Is Time’s Arrow Perspectival? – May, 2015
- Absence of Observed Unspeakably Large Black Holes Tells Us the Curvature of Space – May, 2015
- A General Quadrature Solution for Relativistic, Non-relativistic, and Weakly-Relativistic Rocket Equations – April, 2015
- Two New Variations on the Twin Pseudoparadox – April, 2015
- Editorial for the Special Issue 100 Years of Chronogeometrodynamics: The Status of the Einstein’s Theory of Gravitation in Its Centennial Year – April, 2015
- Cosmological Tests of Gravity – April, 2015
- Einstein’s Uniformly Rotating Disk and the Hole Argument – April, 2015
- Milestones of general relativity: Hubble’s law (1929) and the expansion of the universe – April, 2015
- Angular Momentum Operators from Quantized SO(3) – April, 2015
- Relativistic Paradoxes and Lack of Relativity in Closed Spaces – April, 2015
- The contribution of Giordano Bruno to the special principle of relativity – April, 2015
- Emergent Spacetime: Reality or Illusion? – April, 2015
- Correlative methods for dual-species quantum tests of the weak equivalence principle – March, 2015
- The Warped Science of Interstellar – March, 2015
- Lemaitre’s Big Bang – March, 2015
- Einstein’s cosmology review of 1933: a new perspective on the Einstein-de Sitter model of the cosmos – March, 2015
- The Collaboration of Mileva Maric and Albert Einstein – March, 2015
- Jerk and Hyperjerk in a Rotating Frame of Reference – March, 2015
- Tachyon Physics with Trapped Ions – March, 2015
- A Machian Version of Einstein’s Variable Speed of Light Theory – March, 2015
- Limits and Signatures of Relativistic Spaceflight – March, 2015
- A Non-isothermal Theory for Interpreting Sodium Lines in Transmission Spectra of Exoplanets – March, 2015
- Deriving time from the geometry of space – January, 2015
- Search for Lorentz violation in short-range gravity – December, 2014
- Systematic evaluation of an atomic clock at 2e-18 total uncertainty – December, 2014
- Which is the Quantum Decay Law of Relativistic Particles? – December, 2014
- Constraining Extra Space Dimensions using Precision Molecular Spectroscopy – March, 2015
- On the Existence of Spacetime Structure – March, 2015
- Experiment and theory: the case of the Doppler effect for photons – February, 2015
- Newton’s second law: not so elementary (as it may seem) – February, 2015
- Energy-Momentum Tensors and Motion in Special Relativity – February, 2015
- Bringing Bell’s theorem back to the domain of Particle Physics & Cosmology – February, 2015
- Ehrenfest’s adiabatic hypothesis in Bohr’s quantum theory – February, 2015
- Reading QBism: A Reply to Nauenberg – February, 2015
- A structural theory of everything – February, 2015
- Direct calculation of length contraction and clock retardation – January, 2015
- The Hydrogen Atom: a Review on the Birth of Modern Quantum Mechanics – January, 2015
- Planck’s constant measurement for dummies – January, 2015
- Testing General Relativity with Present and Future Astrophysical Observations – January, 2015
- A summary of the Planck constant measurements using a watt balance with a superconducting solenoid at NIST – January, 2015
- Einstein and Besso: from Zurich to Milano – December, 2014
- Direct Terrestrial Measurement of the Spatial Isotropy of the Speed of Light to 10-18 – December, 2014
- Macroscopic superpositions and gravimetry with quantum magnetomechanics – December, 2014
- Epistemological and Ontological Paraconsistency in Quantum Mechanics: For and Against Bohrian Philosophy – December, 2014
- On a fatal error in tachyonic physics – December, 2014
- Acceleration effects on atomic clocks – December, 2014
- Quantum Darwinism, Classical Reality, and the Randomness of Quantum Jumps – December, 2014
- Sensing Short-Range Forces with a Nanosphere Matter-Wave Interferometer – December, 2014
- Quantum Measurement and the Paulian Idea – December, 2014
- The necessity of the second postulate in special relativity – December, 2014
- Primordial Black Holes as Heat Sources for Living Systems with Longest Possible Lifetimes – December, 2014
- Robust entanglement-based magnetic field sensor beyond the standard quantum limit – December, 2014
- Probing the Constituent Structure of Black Holes – December, 2014
- Is Bohr challenge still relevant? – December, 2014
- A Michelson-Morley Test of Lorentz Symmetry for Electrons – December, 2014
- Einstein and the Formal Equivalence of Mass and Energy – December, 2014
- The four particles paradox in special relativity – December, 2014
- Did Einstein “Nostrify” Hilbert’s Final Form of the Field Equations for General Relativity? – December, 2014
- Photons that travel in free space slower than the speed of light – November, 2014
- Voigt’s transformations and the beginning of the relativistic revolution – November, 2014
- Time as a stochastic process – November, 2014
- Quantum Nonlocality Explained – November, 2014
- Why the wave function, of all things? – November, 2014
- On MOND, extended gravity and non-geodesic motion – November, 2014
- Magnetic-dipole transitions in highly-charged ions as a basis of ultra-precise optical clocks – November, 2014
- Visual appearance of wireframe objects in special relativity – October, 2014
- Curved spacetimes in the lab – October, 2014
- Comment on: Observation of a quantum Cheshire Cat in a matter-wave interferometer experiment – October, 2014
- On the analogy of quantum wave-particle duality with bouncing droplets – October, 2014
- Appearing Out of Nowhere: The Emergence of Spacetime in Quantum Gravity – October, 2014
- Testing the limits of quantum mechanical superpositions – October, 2014
- Royal Observatory of Belgium Gravitational balance – September, 2014
- Test of Time Dilation Using Stored Li+ Ions as Clocks at Relativistic Speed – September, 2014
- The 1919 measurement of the deflection of light – September, 2014
- A Generalization of Gravity – September, 2014
- On measurement of the isotropy of the speed of light – September, 2014
- A quantum of history – September, 2014
- Foucault’s method in new settings – September, 2014
- On Historical Background to the Ontic Breakthrough.I Polemic Defense of Quantum Reality – September, 2014
- QBism: A Critical Appraisal – September, 2014
- Decay Law of Relativistic Particles: Quantum Theory Meets Special Relativity – August, 2014
- Measurement of the Velocity of the Neutrino with MINOS – August, 2014
- The spheronic toy universe: how special relativity may be visualized to emerge from a wave-nature of matter – August, 2014
- Tests of Lorentz symmetry in single beta decay – August, 2014
- The Function of the Second Postulate in Special Relativity – August, 2014
- Energy-momentum conservation and Lipkin’s zilch – August, 2014
- Can negative mass be considered in General Relativity? – August, 2014
- Geometric diagram for relativistic addition of velocities – August, 2014
- The Euclid space-time diagram of the theory of relativity – August, 2014
- Reconstruction of vertical and L-shaped ancient Egyptian sundials and methods for measuring time – August, 2014
- Einstein and Planck on mass-energy equivalence in 1905-06: a modern perspective – July, 2014
- Optimization and error model for atom interferometry technique to measure Newtonian gravitational constant – July, 2014
- Matter wave lensing to picokelvin temperatures – July, 2014
- Aspects of Complementarity and Uncertainty – July, 2014
- A new general relativistic clock effect for counter-rotating test particles in the gravitoelectric field of a non-rotating body – July, 2014
- Gravitomagnetic draconitic clock effect for inclined and quasi-circular orbits around a spinning body arbitrarily oriented in space – July, 2014
- Who creates the Time: Nature or Human? – July, 2014
- Improved limit on a temporal variation of mp/me from comparisons of Yb+ and Cs atomic clocks – July, 2014
- Conceptual Preconditions of Overcoming of Relativistic Intentions in Modern Philosophy of Science – July, 2014
- Optical Atomic Clocks – July, 2014
- The wave equation in the birth of spacetime symmetries – July, 2014
- Didactic derivation of the special theory of relativity from the Klein-Gordon equation – June, 2014
- Special Relativity from the Dynamical Viewpoint – May, 2014
- Is Time Inhomogeneous? – April, 2014
- Quantum Tests of the Einstein Equivalence Principle with the STE-QUEST Space Mission – April, 2014
- Constraining the Violation of Equivalence Principle with IceCube Atmospheric Neutrino Data – April, 2014
- On a Model of Quantum Mechanics and the Mind – April, 2014
- What Do We Know About Lorentz Invariance? – March, 2014
- Direct comparison of optical lattice clocks with an intercontinental baseline of 9000 km – March, 2014
- Present time – March, 2014
- Quantum Theory and Human Perception of the Macro-World – March, 2014
- Universal Gravitation as Lorentz-covariant Dynamics – March, 2014
- Theoretical Particle Limiting Velocity From The Bicubic Equation: Neutrino Example – March, 2014
- Clock Hypothesis of Relativity Theory, Maximal Acceleration, and M.A授ssbauer Spectroscopy – March, 2014
- Reference frames in classical and relativistic physics – March, 2014
- Why I am not a QBist – March, 2014
- A Medieval Multiverse: Mathematical Modelling of the 13th Century Universe of Robert Grosseteste – March, 2014
- How does light move? – Determining the flow of light without destroying interference – March, 2014
- Merging electromagnetism with space-time metric – February, 2014
- Einstein’s aborted attempt at a dynamic steady-state universe – February, 2014
- Are atomic clocks slowing down? Possible connection between the quantum and the cosmos: A feasible experimental test of objective realism – February, 2014
- Particles, waves and trajectories: 210 years after Young’s experiment – February, 2014
- Can the clicks of the detectors provide a complete description of Nature? – February, 2014
- Einstein’s cosmological considerations – February, 2014
- Heating the coffee by looking at it. Or why quantum measurements are physical processes – February, 2014
- Measurement Uncertainty: Reply to Critics – February, 2014
- Quantum Gravity for Dummies – February, 2014
- Toward a principle of quantumness – February, 2014
- Relativity, the Special Theory, explained to Children (from 7 to 107 years old) – February, 2014
- Real-time single-molecule imaging of quantum interference – February, 2014
- A 4-vector formalism for classical mechanics – February, 2014
- Simple Molecules and Clocks – February, 2014
- A steady-state model of the universe by Albert Einstein – February, 2014
- Properties of gravity near the Schwarzschild radius and the cosmological redshift – February, 2014
- A Note On Einstein, Bergmann, and the Fifth Dimension – January, 2014
- Yet another derivation of special relativity transformations without the second postulate – January, 2014
- Relativistic particle in the rest frame – January, 2014
- The Continuum Emission Spectrum of Hf 2-2 near the Balmer Limit and the ORL versus CEL abundance and temperature Discrepancy – January, 2014
- Treating Time Travel Quantum Mechanically – January, 2014
- Comment on “Asking Photons Where Have They Been” – January, 2014
- Reply to “Comment on ‘Asking Photons Where Have They Been'” – January, 2014
- A Case for Lorentzian Relativity – January, 2014
- Why bouncing droplets are a pretty good model of quantum mechanics – January, 2014
- Accelerator experiments contradicting general relativity – January, 2014
- Einstein’s first gravitational field equation 101 years later – January, 2014
- Bending of light caused by gravitation: the same result via totally different philosophies – January, 2014
- Optical atomic clocks – January, 2014
- On time and space double-slit experiments – January, 2014
- A map between Galilean relativity and special relativity – January, 2014
- Accelerating the Averaging Rate of Atomic Ensemble Clock Stability using Atomic Phase Lock – January, 2014
- Consciousness as a State of Matter – January, 2014
- Photon: New light on an old name – December, 2014
- QBism as CBism: Solving the Problem of “the Now” – December, 2013
- Searching the Internet for evidence of time travelers – December, 2013
- The universe as quantum computer – December, 2013
- Schwinger’s Approach to Einstein’s Gravity, or Einstein vs. Schwinger? Not! – December, 2013
- Marcel Grossmann and his contribution to the general theory of relativity – December, 2013
- Aristotle’s Physics: a Physicist’s Look – December, 2013
- Angular Momentum Exchange Between Light and Material Media Deduced from the Doppler Shift – December, 2013
- Radiation Pressure and Photon Momentum in Negative-Index Media – December, 2013
- Discrete Spacetime and Relativistic Quantum Particles – December, 2013
- The Cosmological Constant Problem and Re-interpretation of Time – December, 2013
- Causality in Classical Physics – December, 2013
- Einstein’s cosmic model of 1931: a translation and analysis of a forgotten model of the universe – December, 2013
- Photoelectron emission from plasmonic nanoparticles: Comparison between surface and volume photoelectric effects – December, 2013
- Klein Paradox in the Pilot Wave Interpretation – December, 2013
- Re-Examination of Globally Flat Space-Time – December, 2013
- Eight types of physical “arrows” distinguished by Newtonian space-time symmetry – December, 2013
- Observed Gravitational Wave Effects: Amaldi 1980 Frascati-Rome Classical Bar Detectors, 2013 Perth-London Zener-Diode Quantum Detectors, Earth Oscillation Mode Frequencies – December, 2013
- Mobile and Remote Inertial Sensing with Atom Interferometers – November, 2013
- On a recent preliminary study for the measurement of the Lense-Thirring effect with the Galileo satellites – November, 2013
- Connecting terrestrial to celestial reference frames – November, 2013
- Einstein’s equivalence principle in cosmology – November, 2013
- The reception of relativity in the Netherlands – November, 2013
- The Superposition Principle in Quantum Mechanics – did the rock enter the foundation surreptitiously? – November, 2013
- Einstein’s conversion from his static to an expanding universe – November, 2013
- Annotations regarding the Oxford Questions – November, 2013
- The position-momentum symmetry principle – November, 2013
- Quantum Trajectories and Physical Reality of de Broglie’s Waves – October, 2013
- Action at a distance and causality in quantum theory – October, 2013
- Relativistic Achilles – October, 2013
- Effect of the generalized uncertainty principle on Galilean and Lorentz transformations – October, 2013
- A quantum network of clocks – October, 2013
- What is the Schwarzschild radius of a quantum mechanical particle? – October, 2013
- The GRW flash theory: a relativistic quantum ontology of matter in space-time? – October, 2013
- Comment on “Trouble with the Lorentz Law of Force: Incompatibility with Special Relativity and Momentum Conservation [arXiv:1205.0096]]” – October, 2013
- Time from quantum entanglement: an experimental illustration – October, 2013
- Minimal length, maximal momentum and thermodynamics of black body radiation – October, 2013
- Searching for a highly unlikely frame dependent speed of light using a one-way test – October, 2013
- Non-Inertial Frames in Special and General Relativity – October, 2013
- Classical calculation of relativistic frequency-shifts in an ideal Penning trap – October, 2013
- What Do Experiments in Optics tell us about Photon Momentum in Media? – October, 2013
- A paradox about an atom and a photon – October, 2013
- Lorentz Transformation of Blackbody Radiation – October, 2013
- On Relativistic Entanglement and Localization of Particles and on their Comparison with the Non-Relativistic Theory – October, 2013
- Einstein and the conservation of energy-momentum in general relativity – October, 2013
- Discrete mechanics, time machines and hybrid systems – October, 2013
- Measuring general relativity effects in a terrestrial lab by means of laser gyroscopes – October, 2013
- On the Relation between the Psychological and Thermodynamic Arrows of Time – October, 2013
- The relativity of space-time-property – October, 2013
- George Gamow and Albert Einstein: Did Einstein say the cosmological constant was the “biggest blunder” he ever made in his life? – October, 2013
- Lorentz violation in a uniform newtonian gravitational field – September, 2013
- Does Information Have Mass? – September, 2013
- Why the length of a quantum string cannot be Lorentz contracted – September, 2013
- Trapping light by mimicking gravitational lensing – September, 2013
- On first attempts to reconcile quantum principles with gravity – September, 2013
- A Search for non-Newtonian force in a precision measurement of the scattering of slow neutrons in Xenon gas – September, 2013
- Using Cosmology to Establish the Quantization of Gravity – September, 2013
- Why do Earth satellites stay up? – September, 2013
- A tossed coin as quantum mechanical object – September, 2013
- Orbital effects induced by a certain class of modified theories of gravity with nonminimal coupling between the matter and the metric – September, 2013
- The genesis of the quantum theory of the chemical bond – September, 2013
- Mass, Speed, Direction: John Buridan’s 14th century concept of momentum – September, 2013
- Relative motion in spacetime – September, 2013
- The many faces of the Bohr atom – September, 2013
- Oskar Klein and the fifth dimension – September, 2013
- Unified meta-theory of information, consciousness, time and the classical-quantum universe – September, 2013
- Lorenz, G授del and Penrose: New perspectives on geometry and determinism in fundamental physics – September, 2013
- New conceptions on the light wave theory in a moving frame of reference – September, 2013
- Da investiga守弱o sobre a natureza da luz 錫 relatividade especial: notas de aula – September, 2013
- Physico-mathematical foundations of relativistic cosmology – September, 2013
- Laser assisted Compton scattering of X-ray photons – September, 2013
- Antiproton low-energy collisions with Ps-atoms and true muonium atoms ($.1而ｼ+而ｼ–) – September, 2013
- The High-Energy Interpretation of Quantum Mechanics – September, 2013
- Atomism and Relationalism as guiding principles for Quantum Gravity – September, 2013
- Bell’s spaceship paradox in electron interferometry – September, 2013
- Tests of Lorentz invariance: a 2013 update – September, 2013
- A New Generation of Atomic Clocks: Accuracy and Stability at the 10-18 Level – September, 2013
- Measurements according to “Consistent Quantum Theory” – September, 2013
- Quantum Weak Measurements and Cosmology – September, 2013
- A Pedestrian Approach to the Measurement Problem in Quantum Mechanics – September, 2013
- Relativistic features and time delay of laser-induced tunnel-ionization – September, 2013
- Modern Ives-Stilwell Experiments At Storage Rings: Large Boosts Meet High Precision – September, 2013
- On a Special Transformation to a Non-Inertial, Radially Rigid Reference Frame – September, 2013
- Relativistic effects on the Richtmyer-Meshkov instability – September, 2013
- Gravitation, Equivalence Principle, and Quantum Mechanics (in German) – September, 2013
- Atomic clocks: new prospects in metrology and geodesy – August, 2013
- Chirped Frequency Transfer with an accuracy of $10^{-18}$ and its Application to the Remote Synchronisation of Timescales – August, 2013
- Observer and Particle Transformations and Newton’s Laws – August, 2013
- Constraints on Lorentz Invariance Violation with Fermi-LAT Observations of Gamma-Ray Bursts – August, 2013
- Testing Relativity with High-Energy Astrophysical Neutrinos – August, 2013
- New dates for the eras of the universe from the Planck data – August, 2013
- A Note on Entanglement, Nonlocality, and Superluminal Signaling – August, 2013
- Shut up and let me think! Or why you should work on the foundations of quantum mechanics as much as you please – August, 2013
- Foundations of Quantum Gravity: The Role of Principles Grounded in Empirical Reality – August, 2013
- Is Interstellar Space Travel Possible? – August, 2013
- New subluminal and superluminal spacetime measures – August, 2013
- Optomechanical interface for probing matter-wave coherence – August, 2013
- Disproving Heisenberg’s error-disturbance relation – August, 2013
- Torsion-balance probes of fundamental physics – August, 2013
- Evidence of entanglement, or: Is Schr.A授dinger’s cat really entangled? – August, 2013
- Equivalence Principle and Bound Kinetic Energy – August, 2013
- A simple minded question: Do we live in the four-dimensional spacetime? – August, 2013
- The Fate of the Quantum – August, 2013
- Cyclic models of the relativistic universe: the early history – August, 2013
- The Dark Mass Problem (Solved?) – August, 2013
- A Rosetta Stone for Parameterized Tests of Gravity – July, 2013
- Ruler measurements give space-time-transformation-independent invariant lengths – July, 2013
- Dispelling the Quantum Spooks – a Clue that Einstein Missed? – July, 2013
- Compton Effect in the Medium with Non-unity Refractive Index – July, 2013
- Dynamical 3-Space: Gravitational Wave Detection and the Shnoll Effect – July, 2013
- Aberration of starlight experiment – July, 2013
- Relativistic Quantum Metrology: Exploiting relativity to improve quantum measurement technologies – July, 2013
- Testing quantum physics in space using optically trapped nanospheres – July, 2013
- Tests of the Lorentz and CPT Symmetries at the Planck Energy Scale with X-Ray and Gamma-Ray Observations – July, 2013
- Visualization of a particle’s wave function in the double slits experiment – July, 2013
- The Perceptual Arrow of Time and the Sensory Transduction Process – July, 2013
- A quantum mechanical interpretation for the relativity of the space-time – July, 2013
- Gravity-induced phase-shift of light: outline of an interferometric test of the Equivalence Principle – July, 2013
- Testing Lorentz Symmetry with the Double Chooz Experiment – July, 2013
- Search for neutrino-antineutrino oscillations with a reactor experiment – July, 2013
- Lorentz Breaking and Gravity – July, 2013
- Probing Physics beyond the Standard Model with He/Xe clock comparison experiments – July, 2013
- Testing Lorentz Invariance with a Double-Pass Optical Ring Cavity – July, 2013
- Are Micro and Macro Arrows of Time Connected Each Other? – July, 2013
- Transformity: The Dependence of the Laws of Physics on Higher-Dimensional Coordinate Transformations – July, 2013
- Einstein’s Miraculous Year – July, 2013
- Photon in a cavity — a Gedankenexperiment – July, 2013
- Simultaneous Dual-Species Matter-Wave Accelerometer – July, 2013
- The 1905 Relativity Paper and the “Light Quantum” – July, 2013
- Comparing theories: the dynamics of changing vocabulary. A case-study in relativity theory – July, 2013
- Generalized Lorentz Transformations – July, 2013
- A new perspective on CP and T violation – July, 2013
- On the gravitational redshift – July, 2013
- Interferometer design of the KAGRA gravitational wave detector – June, 2013
- Constraints on corrections to Newtonian gravity from two recent measurements of the Casimir interaction between metallic surfaces – June, 2013
- Three Merry Roads to T-Violation – June, 2013
- Invariance of Spooky Action at a Distance in Quantum Entanglement under Lorentz Transformation – June, 2013
- Synchronized clocks and time on a rotating disc – June, 2013
- Einstein, the reality of space, and the action-reaction principle – June, 2013
- On the Relativity of Cosmological Expansion and the Physical Constants – June, 2013
- Einstein’s physical geometry at play: inertial motion, the boostability assumption, the Lorentz transformations, and the so-called conventionality of the one-way speed of light – June, 2013
- Rydberg atom detection of the temporal coherence of cosmic microwave background radiation – May, 2013
- Relativity violations and beta decay – May, 2013
- Energy uncertainty of the final state of a decay process – May, 2013
- Fritz Hasenohrl and E = mc2 – March, 2013
- New prospects and techniques for matter wave interferometry with ions – March, 2013
- On Back-reaction in Special Relativity – March, 2013
- Limits on Violations of Lorentz Symmetry and the Einstein Equivalence Principle using Radio-Frequency Spectroscopy of Atomic Dysprosium – March, 2013
- I-Love-Q Relations in Neutron Stars and their Applications to Astrophysics, Gravitational Waves and Fundamental Physics – March, 2013
- From aether theory to Special Relativity – February, 2013
- The quantum vacuum as the origin of the speed of light – February, 2013
- Is a rational explanation of wave-particle duality possible? – February, 2013
- I-Love-Q – February, 2013
- Attractive Optical Forces from Blackbody Radiation – February, 2013
- Is there a “Charge – Magnet Paradox” – December, 2012
- Testing Lorentz invariance with neutrino bursts from supernova neutronization – November, 2012
- A Relational Concept of Machian Relativity – July, 2012
- Comment on “Trouble with the Lorentz Law of Force: Incompatibility with Special Relativity and Momentum Conservation” – July, 2012
- Spreading of Ultrarelativistic Wave Packet and Redshift – July, 2012
- Time vector defined in imaginary space of spatial coordinate – July, 2012
- Gravitomagnetic forces and quadrupole gravitational radiation from special relativity – May, 2012
- Is the aether entrained by the motion of celestial bodies? What do the experiments tell us? – April, 2012
- Relativistic quantum mechanics and relativistic quantum statistics based upon a novel perspective on relativistic transformation – March, 2012
- On the formal statement of the special principle of relativity – September, 2011
- Hasenohrl and the Equivalence of Mass and Energy – August, 2011
- Time-asymmetry of probabilities versus relativistic causal structure: an arrow of time – August, 2011
- Hubble’s law and faster than light expansion speeds – July, 2011
- Elementary Considerations on the Interpretation of the Foundations of Quantum Mechanics by Albert Einstein, 1953 – July, 2011
- Quantum magic: A skeptical perspective – July, 2011
- What we don’t know about time – July, 2011
- Einstein’s `Z周rich Notebook’ and his Journey to General Relativity – June, 2011
- On time-interval transformations in special relativity – May, 2011
- Rigid body motion in special relativity – May, 2011
- Covariant Uniform Acceleration and Time Dilation – May, 2011
- Isotropy of the Speed of Light – March, 2011
Reply to “Isotropy of Speed of Light” by Castano and Hawkins - Longitudinal light clock and Lorentz distortions – March, 2011
- On the experimental determination of the one-way speed of light – February, 2011
- The Apparent Velocity and Acceleration of Relativistically Moving Objects – February, 2011
- Relativity tests and their motivation – February, 2011
- A Sensitive Test of Mass-Energy Relation – January, 2011
- The Nature and Origin of Time-asymmetric Spacetime Structures – December, 2010
- Phase tuning in Michelson-Morley experiments performed in vacuum, assuming length contraction – October, 2010
- Explaining atomic clock behavior in a gravitational field with only 1905 Relativity – September, 2010
- A Theoretical Diagnosis on Light Speed Anisotropy from GRAAL Experiment – September, 2010
- Testing Lorentz Invariance by Comparing Light Propagation in Vacuum and Matter – August, 2010
- Newtonian limit of Einsteinian gravity: from dynamics of Solar system to dynamics of stars in spiral galaxies – June, 2010
- Relativistic Length Agony Continued – May, 2010
- The Interpretation of Wave Mechanics with the help of Waves with Singular Regions – May, 2010
- Nothing but Relativity, Redux – May, 2010
- “Nonrelativistic” Kinematics: Particles or Waves? – May, 2010
- Comments on Nonlocality in Deformed Special Relativity, in reply to arXiv:1004.0664 by Lee Smolin and arXiv:1004.0575 by Jacob et al – May, 2010
- What and How does a Michelson Interferometer Measure? – March, 2010
- Is the Speed of Light Invariant or Covariant? – March, 2010
- The Twin Paradox and the Principle of Relativity – February, 2010
- The Invariance of the Speed of Light – February, 2010
- Extending Special Relativity to Superluminal Motion – February, 2010
- Absolute Motion Determined from Michelson-type Experiments in Optical Media – February, 2010
- Unless Connected to Relativity the First and Second Laws of Thermodynamics are Incompatible – February, 2010
- Lorentz Transformation Equations in Galilean Form – February, 2010
- Lessons from Failures to Achieve What was Possible in the Twentieth Century Physics – January, 2010
- Poincare and Relativity: The Logic of the 1905 Palermo Memoir – January, 2010
- The Fundamental Importance of Discourse in Theoretical Physics – January, 2010
- Spacetime and Matter – A Duality of Partial Orders – January, 2010
- Deformation of the Bodies by the Result of Length Contraction: A new Approach to the Lorentz Contraction – January, 2010
- Starships and Spinoza – January, 2010
- Beyond the Fundamentals of Special Relativity: Full Lorentz Gamma Factor – January, 2010
- Why Gravity is Fundamental – January, 2010
- Three +1 Faces of Invariance – January, 2010
- Time, Topology and the Twin Paradox – October, 2009
- Suggesting a Very Simple Experiment Designed to Detect Tachyons – October, 2009
- The Twin Paradox and Mach’s Principle – October, 2009
- The age of the universe, the Hubble constant, the accelerated expansion and the Hubble effect – August, 2009
- Thomas Rotation and Mocanu Paradox — Not at all Paradoxical – July, 2009
- The Nature of Time: From a Timeless Hamiltonian Framework to Clock Time of Metrology – July, 2009
- A Constructive Approach to the Special Theory of Relativity – July, 2009
- Unsuitability of the Moving Light Clock System for the Lorentz Factor Derivation – June, 2009
- Lorentz Contraction, Bell’s Spaceships, and Rigid Body Motion in Special Relativity – June, 2009
- Visualizing Imaginary Rotations and Applications in Physics – June, 2009
- The Central Mystery of Quantum Mechanics – June, 2009
- Adding to the Paradox: The Accelerated Twin is Older – May, 2009
- Time as an Illusion – May, 2009
- The Behaviour of Clocks and Rods in Special and General Relativity – April, 2009
- Experiment for Testing Special Relativity Theory – April, 2009
- Time Generated by Intrinsic Observers – April, 2009
- Particle-accelerator Constraints on Isotropic Modifications of the Speed of Light – April, 2009
- Is the Lorentz Contraction Inevitable in the Special Theory of Relativity? – April, 2009
- Accelerating Spaceships Paradox and Physical Meaning of Length Contraction – March, 2009
- Einstein’s Apple and Relativity’s Gravitational Field – March, 2009
- Einstein’s Unpublished Opening Lecture for his Course on Relativity Theory in Argentina, 1925 – March, 2009
- Special Relativity from the Wave Picture of the Light and of the Matter – March, 2009
- Speculations on Dark Matter as a Luminiferous Medium – February, 2009
- Some Paradoxes in Special Relativity – February, 2009
- An Alternative Derivation of Einstein’s Doppler Shift and Aberration Formulae – February, 2009
- Understanding the Special Theory of Relativity – January, 2009
- Supernovae Red Shifts Fitted by Special Relativity, no Dark Energy – January, 2009
- A New Paradigm for Obtaining the Laws of Physics – January, 2009
- Some Subtle Concepts in Fundamental Physics – January, 2009
- An Alternative to Relativistic Transformation of Special Relativity based on the First Principles – December, 2008
- Experimental Test of the Heisenberg Uncertainty Relation for Position and Momentum – December, 2008
- Particle and Wave: Developing the Quantum Wave Accompanying a Classical Particle – December, 2008
- Illustrating Some Implications of the Conservation Laws in Relativistic Mechanics – December, 2008
- Time Turns the Universal Kaleidoscope – December, 2008
- On Some Consequences of the Snyder-Sidharth Deformation of Special Relativity – December, 2008
- Time and Reality of Worldtubes – December, 2008
- A Closer Look at the Uncertainty Relation of Position and Momentum – November, 2008
- Probing New Limits for the Violation of the Equivalence Principle in the solar-reactor neutrino sector as a next to leading order effect – November, 2008
- Harmonic mean, the Gamma factor and Speed of Light – November, 2008
- 25 Years Ago: The Official Farewell to the Meter – October, 2008
- Relativistic Mechanics and a Special Role for the Coulomb Potential – October, 2008
- A Variation of the Clock Paradox and a Distinguishing Feature of an Inertial Frame – September, 2008
- Space-time Attributes of Physical Objects and the Laws of Space-time Physics – September, 2008
- Uncertainties Inherent in the Decomposition of a Transformation – September, 2008
- Lorentz Transformations with Arbitrary Line of Motion – September, 2008
- The Theory of Relativity and the Pythagorean Theorem – September, 2008
- The Einstein Formula: E_0=mc2 “Isn’t the Lord laughing?” – September, 2008
- Reversal in Time Order of Interactive Events: Collision of Inclined Rods – September, 2008
- Modelling Time – September, 2008
- Event-by-event Simulation of Double-slit Experiments with Single Photons – September, 2008
- Mass and Total Energy of Moving Bodies in a Quantified Expansion – August, 2008
- Unravelling Lorentz Covariance and the Spacetime Formalism – July, 2008
- New Space Experiment Proposed for General Relativity – July, 2008
- The Lorentz Force and the Radiation Pressure of Light – July, 2008
- The Two Faces of the Coin of Special Relativity – July, 2008
- Primary and Reciprocal Space-time Experiments, Relativistic Reciprocity Relations and Einstein’s Train-embankment Thought Experiment – July, 2008
- Faster than Light Communication: Is it Possible? – July, 2008
- On Decompositions of Lorentz Transformations and their Physical Interpretations – May, 2008
- Generalized Principle of Limiting 4-Dimensional Symmetry and the Solution of the “Two-Spaceship Paradox” – May, 2008
- Special Relativity and Possible Lorentz Violations Consistently Coexist in Aristotle Space-time – May, 2008
- Unexplored Aspect of Velocity of Light – May, 2008
- Bohm’s Realist Interpretation of Quantum mechanics – May, 2008
- Scientific Realism and Classical Physics – May, 2008
- Einstein’s E = mc2 Mistakes – May, 2008
- Why Einstein, Podolsky and Rosen did not Prove that Quantum Mechanics is `Incomplete’ – May, 2008
- Theory of the Elementary Particles – May, 2008
- Quantum Mechanics, is it Magic? – April, 2008
- The Absolute Frequency of the 87Sr Optical Clock Transition – April, 2008
- On the Nonlinear Continuum Mechanics of the Luminiferous Medium – April, 2008
- A Model of Electrons, Photons and the Ether – April, 2008
- The Relativity of Inertia and Reality of Nothing – April, 2008
- On a Question of Relativity – April, 2008
- Michelson-Morley Experiment within the Quantum Mechanics Framework – April, 2008
- Characteristics, Effects and Life Expectancy of a Primeval Photon – April, 2008
- Relativity and Aether Theory, a Crucial Distinction – March, 2008 (original October, 2006)
- Spectral Emission of Moving Atom – March, 2008 (original June, 2006)
- Time Dilation and Langevin Paradox – March, 2008
- Time Desynchronization and Ehrenfest Paradox – March, 2008
- The Mystical Formula and the Mystery of Khronos – January, 2008
- Single Photon Michelson-Morley Experiment via de Broglie-Bohm Picture: An Interpretation Based on the Hypothesis of Frame Dragging – January, 2008
- A New Approach to Special Relativity and The Universe – January, 2008
- Universality of the de Broglie-Einstein Velocity Equation – December, 2007
- Testing General Relativity with Satellite Laser Ranging: Recent Developments – November, 2007
- NASA Tests of Einstein’s Universe Call for Non-empty Space Physics of Nonlocal Classical Matter – November, 2007
- Testing the Gravitomagnetic Clock Effect on the Earth with Neutron Interferometry – November, 2007
- Remodeled Relativity Theory – November, 2007
- The Velocity Increase of Mass and the Classical Physics – November, 2007
- Faster than Light Quantum Communication – October, 2007
- Proper Mass Variation under Gravitational and Coulomb Force Action in Relativistic Mechanics of Point Particle – October, 2007
- Synchronizing Equivalent Clocks Across Inertial Frames – October, 2007
- How Far Should the Principle of Relativity Go? – October, 2007
- The Watch Paradox: Solution of the Problem – October, 2007
- Comment on “Macroscopic Violation of Special Relativity” by Nimtz and Stahlhofen [arXiv:0708.0681v1] – September, 2007
- About Superluminal Motions and Special Relativity: A Discussion of some Recent Experiments, and the Solution of the Causal Paradoxes – September, 2007
- Lorentz Transformation Directly from the Invariance of the Speed of Light via the Addition Law of Parallel Speeds – September, 2007
- Space-time Uncertainty Relation and Operational Definition of Dimension – September, 2007
- On the Concept of Relativistic Mass – September, 2007
- Macroscopic Violation of Special Relativity – September, 2007
- Quantum Corrections to Special Relativity – August, 2007
- First-person Visualizations of the Special and General Theory of Relativity – August, 2007
- The VSL Discussion: What Does Variable Speed of Light Mean and Should we be Allowed to Think About ? – August, 2007
- Light Speed Invariance is a Remarkable Illusion – August, 2007
- Derivation of Relativistic law of Addition of Velocities from Superposition of Eigenfunctions and Discreteness – August, 2007
- Localized Waves: A Scientific and Historical Introduction – August, 2007
- Local Lorentz Transformation and “Lorentz Violation” – August, 2007
- Interpretation of Relativistic, Transverse, and Longitudinal Mass using the Lorentz Transformation of Reference Time: Explanation of Time Dilation via Spherical Light Clock – July, 2007
- Clarifying Einstein’s First Derivation for Mass-Energy Equivalence and Consequently Making Ives’s Criticism Void – May, 2007
- On Spacetime Coordinates in Special Relativity – May, 2007
- Learning More from the Lorentz Transformations – April, 2007
- The Limits of Special Relativity – April, 2007
- Albert Einstein: His Annus Mirabilis 1905 – January, 2007
- The Time at the Subplanckian Scale – January, 2007
- The Free-Will Postulate in Quantum Mechanics – January, 2007
- NASA’s Astonishing Evidence that c is not Constant: The Pioneer Anomaly – January, 2007
- Articles from 1997 to 2006