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Keyword: physics

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  • Einstein proof: Nobel winners find ripples in the universe

    10/03/2017 4:03:34 PM PDT · by Olog-hai · 30 replies
    Associated Press ^ | Oct 3, 2017 5:14 PM EDT | Seth Borenstein and Jim Heintz
    For decades astronomers tried to prove Albert Einstein right by doing what Einstein thought was impossible: detecting the faint ripples in the universe called gravitational waves. They failed repeatedly until two years ago when they finally spotted one. Then another. And another. And another. Three American scientists — including one who initially flunked out of MIT — won the Nobel Prize in physics Tuesday that launched a whole new way to observe the cosmos. Sweden’s Royal Academy of Sciences cited the combination of highly advanced theory and ingenious equipment design in awarding Rainer Weiss of the Massachusetts Institute of Technology...
  • We’re About to Cross The ‘Quantum Supremacy’ Limit in Computing

    09/02/2017 4:48:55 PM PDT · by 2ndDivisionVet · 27 replies
    Gears of Biz ^ | September 3, 2017 | Helen Clark
    The 4th International Conference on Quantum Technologies held in Moscow last month was supposed to put the spotlight on Google, who were preparing to give a lecture on a 49-qubit quantum computer they have in the works. A morning talk presented by Harvard University’s Mikhail Lukin, however, upstaged that evening’s event with a small announcement of his own – his team of American and Russian researchers had successfully tested a 51-qubit device, setting a landmark in the race for quantum supremacy. Quantum computers are considered to be part of the next generation in revolutionary technology; devices that make use of...
  • Sound Pulses Exceed Speed of Light

    09/02/2017 12:06:20 AM PDT · by 2ndDivisionVet · 33 replies
    Live Science ^ | January 12, 2007 | Charles Q. Choi
    A group of high school and college teachers and students has transmitted sound pulses faster than light travels—at least according to one understanding of the speed of light. The results conform to Einstein's theory of relativity, so don't expect this research to lead to sound-propelled spaceships that fly faster than light. Still, the work could help spur research that boosts the speed of electrical and other signals higher than before. The standard metric for the speed of light is that of light traveling in vacuum. This constant, known as c, is roughly 186,000 miles per second, or roughly one million...
  • Confirmed: Electrons Flowing Like Liquid in Graphene Are Insanely Superconductive

    08/23/2017 12:13:26 AM PDT · by Enchante · 36 replies
    Science Alert ^ | August 23, 2017 | Fiona MacDonald
    Electrons have been caught flowing through graphene like a liquid, reaching limits physicists thought were fundamentally impossible. This type of conductance is known as 'superballistic' flow, and this new experiment suggests it could revolutionise the way we conduct electricity. If that's not crazy enough, the super-fast flows actually occur as a result of electrons bouncing off each other, something that high school physics tells us should slow conductivity down.
  • Measuring The Speed Of Quantum Tunneling

    07/31/2017 8:20:26 PM PDT · by MtnClimber · 9 replies
    Forbes ^ | 30 Jul, 2017 | Chad Orzel
    I've been wrapped up in writing a new book, so I didn't notice this right when it was published, but a couple of weeks ago there was a paper in Physical Review Letters titled Experimental Evidence for Quantum Tunneling Time that's worth a mention here. This is, as the title suggests, an investigation of one of the signature weird effects of quantum physics, namely the phenomenon of "tunneling" where a particle encountering a barrier can end up on the other side even though it doesn't have enough energy to get there by normal means. This was followed a few days...
  • The strange topology that is reshaping physics

    07/20/2017 7:04:36 PM PDT · by MtnClimber · 16 replies
    Nature ^ | 18 Jul, 2017 | Davide Castelvecchi
    Topological effects might be hiding inside perfectly ordinary materials, waiting to reveal bizarre new particles or bolster quantum computing. Charles Kane never thought he would be cavorting with topologists. “I don't think like a mathematician,” admits Kane, a theoretical physicist who has tended to focus on tangible problems about solid materials. He is not alone. Physicists have typically paid little attention to topology — the mathematical study of shapes and their arrangement in space. But now Kane and other physicists are flocking to the field. In the past decade, they have found that topology provides unique insight into the physics...
  • Lawbreaking Particles May Point to a Previously Unknown Force in the Universe

    07/18/2017 7:46:52 PM PDT · by MtnClimber · 38 replies
    Scientific American ^ | 17 Jul, 2017 | Jesse Dunietz
    Scientists aren’t yet certain that electrons and their relatives are violating the Standard Model of particle physics, but the evidence is mounting. For decades physicists have sought signs of misbehaving particles—evidence of subtle cracks in the “Standard Model” of particle physics, the dominant theory describing the most fundamental building blocks of our universe. Although the Standard Model has proved strikingly accurate, scientists have long known some adjustments will be needed. Now, as a recent review paper in Nature documents, experimenters have started seeing suggestions of particles flouting the theory—but they’re not quite the violations theorists were looking for. The evidence...
  • First ever Earth-orbit teleportation completed

    07/11/2017 7:12:10 PM PDT · by Ciaphas Cain · 49 replies
    Sky News ^ | July 11, 2017
    Scientists have completed the first teleportation of an object from Earth to a satellite orbiting more than 300 miles away. Alas, those of you expecting Scotty to beam them up soon will be sorely disappointed - the object teleported was merely a single photon. While the experiment doesn't bring us any closer to teleporting matter, it is a huge leap forward for quantum physics. The team of Chinese researchers behind the successful teleportation came together from a number of disciplines and included quantum physicists as well as rocket scientists. In 2016, they launched a satellite called Micius, named after Chinese...
  • EXPERIMENT: Women Try 'Manspreading'! | Louder With Crowder

    06/22/2017 4:37:42 AM PDT · by Mechanicos · 23 replies
    YouTube ^ | June 21, 2017 | Steven Crowder
    Why do men "manspread'? Real women experience the every day discomfort men do on public transit.
  • Physicists Discover a Possible Break in the Standard Model of Physics

    06/18/2017 5:27:47 PM PDT · by jdege · 47 replies
    Futurism ^ | une 10, 2017 | Dom Galeon
    Physicists Discover a Possible Break in the Standard Model of PhysicsIn order to make sense of the physical world, scientists have worked hard to discover theories and principles that govern the physics of matter. This is what’s called the Standard Model of Physics, which includes all the laws and principles concerning matter in all its forms and sizes. Bascially, the Standard Model applies to even particle physics. Or so it should. Scientists from the University of California at Santa Barbara (USCB) and colleagues from various other institutions have recently discovered that there might be a break in the application of...
  • Scientists Are About to Perform an Experiment to See if The Human Mind Is Bound by Physics

    05/25/2017 8:02:24 PM PDT · by Ciaphas Cain · 75 replies
    Science Alert ^ | May 25, 2017 | Dom Galeon
    Perhaps one of the most intriguing and interesting phenomena in quantum physics is what Einstein referred to as a "spooky action at a distance" - also known as quantum entanglement. This quantum effect is behind what makes quantum computers work, as quantum bits (qubits) generally rely on entanglement to process data and information. It's also the working theory behind the possibility of quantum teleportation. The long and short of it is this: entangled particles affect one another regardless of distance, where a measurement of the state of one would instantly influence the state of the other. However, it remains "spooky"...
  • Scientists solve 400-year-old mystery of Prince Rupert's drops

    05/09/2017 10:39:25 AM PDT · by Red Badger · 43 replies
    phys.org ^ | May 9, 2017 | by Lisa Zyga
    Prince Rupert’s drop. ============================================================================================================================ (Phys.org)—Researchers have finally answered a question that has stumped scientists since the early 1600s: Why are the heads of tadpole-shaped pieces of glass called "Prince Rupert's drops" so strong? In the 17th century, Prince Rupert from Germany brought some of these glass drops to England's King Charles II, who was intrigued by their unusual properties. While the head of the drop is so strong that it can withstand the impact of a hammer, the tail is so fragile that bending it with your fingers will not only break the tail, but cause the entire droplet to...
  • Physicists manage to 'breed' Schrodinger's cat in breakthrough that could help [tr]

    05/02/2017 11:08:28 AM PDT · by C19fan · 34 replies
    UK Daily Mail ^ | May 2, 2017 | Cheyenne MacDonald
    Scientists have developed a way to 'breed' Schrodinger's hypothetical cat in a breakthrough experiment that could bridge the gap between the quantum and the visible - or classical - worlds. The cat in the famous thought experiment can be alive and dead at the same time, in a quantum phenomenon known as superposition. But, whether this effect translates to larger objects has long remained a mystery. Physicists have now created a way to amplify pairs of classical states of light to generate 'enlarged' cats, in effort to uncover the limit (if there is one) of the quantum world.
  • Ask Ethan: Why Is There A Limit To What Physics Can Predict?

    04/10/2017 11:47:52 AM PDT · by C19fan · 16 replies
    Forbes ^ | April 8, 2017 | Ethan Siegel
    If you divide the matter in the Universe into smaller and smaller constituents, you'll eventually reach a limit when you hit a fundamental, indivisible particle. All macroscopic objects can be divided into molecules, then atoms, then electrons (which are fundamental) and nuclei, then protons and neutron, and finally, inside them, there are quarks and gluons. Electrons, quarks and gluons are examples of fundamental particles that cannot be divided any smaller. But how is it possible that space and time itself have those very same limits? Derek Kueter wants to know: Why are there these units (Planck units) which you can't...
  • Why Georges Lemaître Should Be as Famous as Einstein

    03/07/2017 6:01:33 AM PST · by C19fan · 11 replies
    Real Clear Science ^ | March 7, 2017 | Ross Pomeroy
    YOUNG STUDENTS lucky enough to benefit from a science education will likely recognize Albert Einstein, Isaac Newton, Galileo Galilei, Charles Darwin, Marie Curie, or Gregor Mendel. But ask them about Georges Lemaître and they'd probably be stumped. Indeed, the man who first proposed that the universe is expanding and formulated the theory of the Big Bang is scarcely recognized by Google. Search for "famous scientists" and scroll through the horizontal list that pops up. Lemaître is nowhere to be seen.
  • Richard Muller on why the flow of time is not an illusion

    02/11/2017 7:10:41 AM PST · by MtnClimber · 85 replies
    Physics Today ^ | 10 Feb, 2017 | Melinda Baldwin
    The physicist and author argues that cosmologists should take the concept of time more seriously and talks about becoming a “converted skeptic” on climate change. ....MULLER: The flow of time does not exist in the usual spacetime diagram of physics. Time is mysterious; in any relativistic coordinate system, it is linked to space. And yet time is different—and I mean much more than simply a sign in the metric. Time flows. Choose any coordinate system and you can stand still in space but not in time. That different behavior breaks the otherwise glorious spacetime symmetry. Moreover, there is a special...
  • Scientists Create A New Kind Of Matter: Time Crystals

    01/29/2017 8:28:33 PM PST · by BenLurkin · 18 replies
    popularmechanics.com ^ | Jan 28, 2017 | Sophie Weiner
    Now, two teams of researchers have figured out that crystals' repeating patterns can also exist through time. These "time crystals," detailed in a new paper in Physical Review Letter, are an entirely new kind of matter, one that can never reach equilibrium. To create the time crystals, researchers at University of Maryland hooked together 10 ytterbium atoms and hit them with two lasers multiple times to keep them out of equilibrium. Though the atoms did settle into a pattern, they could not reach equilibrium, meaning that the crystals perpetually remain in motion, though they don't contain any energy. Almost all...
  • Scientists have confirmed a brand new form of matter: time crystals

    01/29/2017 5:02:45 AM PST · by Mechanicos · 48 replies
    Science Alert ^ | 28 JAN 2017 | FIONA MACDONALD
    For months now, there's been speculation that researchers might have finally created time crystals - strange crystals that have an atomic structure that repeats not just in space, but in time, putting them in perpetual motion without energy. ... But time crystals have a structure that repeats in time, not just in space. And it keep oscillating in its ground state. ...
  • Princeton Physics Professor Discredits Anthropogenic Climate Change Theory

    12/23/2016 7:21:23 PM PST · by Coleus · 50 replies
    Princeton Physics Professor Discredits Anthropogenic Climate Change Theory  
  • Pilot Wave Theory and Quantum Realism (PBS video)

    12/01/2016 3:16:26 PM PST · by Reeses · 11 replies
    PBS Digital Studios ^ | Nov 30, 2016 | PBS Digital Studios
    There’s one interpretation of the meaning of quantum mechanics that manages to skip a lot of the unphysical weirdness of the mainstream interpretations: it's de Broglie-Bohm pilot wave theory. There are some pretty out-there explanations for the processes at work behind the incredibly successful mathematics of quantum mechanics - things are both waves and particles at the same time, the act of observation defines reality, cats are alive and dead, or even: the universe is constantly splitting into infinite alternate realities. The weird results of quantum experiments seem to demand weird explanations of the nature of reality. In this episode,...