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Keyword: stringtheory

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  • Physicists Just Found The Lightest Known Form of Uranium, And It Has Unique Behaviors

    05/04/2021 7:49:05 AM PDT · by Red Badger · 47 replies
    https://www.sciencealert.com ^ | 4 MAY 2021 | MARA JOHNSON-GROH
    Scientists have discovered a new type of uranium that is the lightest ever known. The discovery could reveal more about a weird alpha particle that gets ejected from certain radioactive elements as they decay. The newfound uranium, called uranium-214, is an isotope, or a variant of the element, with 30 more neutrons than protons, one fewer neutron than the next-lightest known uranium isotope. Because neutrons have mass, uranium-214 is much lighter than more common uranium isotopes, including uranium-235, which is used in nuclear reactors and has 51 extra neutrons. This newfound isotope isn't just lighter than others, but it also...
  • Can our brains help prove the universe is conscious?

    04/25/2021 5:21:05 PM PDT · by ETL · 32 replies
    Space.com ^ | April 25, 2021 | David Crookes
    As humans, we know we are conscious because we experience and feel things. Yet scientists and great thinkers are unable to explain what consciousness is and they are equally baffled about where it comes from."Consciousness — or better, conscious experience — is obviously a part of reality," said Johannes Kleiner, a mathematician and theoretical physicist at the Munich Center For Mathematical Philosophy, Germany. "We're all having it but without understanding how it relates to the known physics, our understanding of the universe is incomplete."With that in mind, Kleiner is hoping math will enable him to precisely define consciousness. Working with...
  • Sizing Up the Most Massive Neutron Star

    04/29/2021 3:00:32 PM PDT · by LibWhacker · 8 replies
    APS - physics ^ | 4/29/2021 | Matteo Rini
    A satellite experiment has revealed that the heaviest known neutron star is unexpectedly large, which suggests that the matter in the star’s inner core is less “squeezable” than some models predict. NICER measures the size of a neutron star by tracking the x-ray emission from “hot spots” on the surface as the star rotates. These spots occur at the magnetic poles of the star, where the field slams particles onto the star surface. Neutron stars are “cosmic zombies”­—corpses of massive stars that collapsed in violent explosions after running out of fuel. By studying these ultradense objects, researchers hope to understand...
  • Isaac Newton latest historical figure swept up in 'decolonisation' drive

    04/29/2021 12:16:28 PM PDT · by LibWhacker · 65 replies
    The Telegraph ^ | 4/24/2021 | Ewan Somerville
    Sheffield University said the mathematician may have benefited from "colonial-era activity" as it looks to overhaul its physics curriculumStudents learning about the mathematician and scientist’s three laws of motion, the core of modern physics, could see changes in their teaching to explain the “global origins and historical context” of his theories Students learning about the mathematician and scientist’s three laws of motion, the core of modern physics, could see changes in their teaching to explain the “global origins and historical context” of his theories Sir Isaac Newton has been labelled as a potential beneficiary of “colonial-era activity” in draft plans...
  • How Maxwell’s Demon Continues to Startle Scientists [Entropy]

    04/29/2021 10:38:11 AM PDT · by Red Badger · 46 replies
    https://www.quantamagazine.org ^ | APRIL 22, 2021 | Jonathan O'Callaghan
    The thorny thought experiment has been turned into a real experiment — one that physicists use to probe the physics of information ============================================================= It took physicists 115 years to tame Maxwell’s Demon. The universe bets on disorder. Imagine, for example, dropping a thimbleful of red dye into a swimming pool. All of those dye molecules are going to slowly spread throughout the water. Physicists quantify this tendency to spread by counting the number of possible ways the dye molecules can be arranged. There’s one possible state where the molecules are crowded into the thimble. There’s another where, say, the molecules...
  • Researchers create light waves that can penetrate even opaque materials

    04/12/2021 4:23:18 PM PDT · by BenLurkin · 19 replies
    phys.org ^ | APRIL 12, 2021 | Vienna University of Technology
    Why is sugar not transparent? Because light that penetrates a piece of sugar is scattered, altered and deflected in a highly complicated way. However, as a research team from TU Wien (Vienna) and Utrecht University (Netherlands) has now been able to show, there is a class of very special light waves for which this does not apply: for any specific disordered medium—such as the sugar cube you may just have put in your coffee—tailor-made light beams can be constructed that are practically not changed by this medium, but only attenuated. The light beam penetrates the medium, and a light pattern...
  • Scientists Just Killed the EmDrive

    04/12/2021 12:40:40 PM PDT · by cann · 38 replies
    popular mechanics ^ | MAR 31, 2021 | BY CAROLINE DELBERT MAR 31, 2021
    In major international tests, the physics-defying EmDrive has failed to produce the amount of thrust proponents were expecting. In fact, in one test at Germany’s Dresden University, it didn’t produce any thrust at all. Is this the end of the line for EmDrive?
  • This Nuclear Reactor Just Made Fusion Viable by 2030. Seriously.

    04/09/2021 2:49:53 PM PDT · by Wonder Warthog · 42 replies
    Popular Mechanics ^ | April 8 2021 | Carolyn Delbert
    TAE Technologies, the world’s largest private fusion company, has announced it will have a commercially viable nuclear fusion power plant by 2030, which puts it years—or even decades—ahead of other fusion technology companies. The California-based company has raised $880 million in funding for its hydrogen-boron reactor. This reactor isn’t a traditional tokamak or stellarator; instead, it uses a confined particle acceleration mechanism that produces and confines plasma. All fusion technology has plasma, which mimics the extreme reactions that power all the stars—it’s what we’re emulating when we make fusion energy experiments. “Plasma is an oozy substance; the challenge of containing...
  • Evidence of Exciting New Physics From U.S. Department of Energy’s Muon G-2 Experiment – “Today Is an Extraordinary Day”

    04/07/2021 12:22:28 PM PDT · by Red Badger · 46 replies
    https://scitechdaily.com ^ | APRIL 7, 2021 | By FERMI NATIONAL ACCELERATOR LABORATORY
    The long-awaited first results from the Muon g-2 experiment at the U.S. Department of Energy’s Fermi National Accelerator Laboratory show fundamental particles called muons behaving in a way that is not predicted by scientists’ best theory, the Standard Model of particle physics. This landmark result, made with unprecedented precision, confirms a discrepancy that has been gnawing at researchers for decades. The strong evidence that muons deviate from the Standard Model calculation might hint at exciting new physics. Muons act as a window into the subatomic world and could be interacting with yet undiscovered particles or forces. “Today is an extraordinary...
  • Could a Human Enter a Black Hole to Study It – And Survive the Event Horizon?

    04/06/2021 9:46:53 AM PDT · by Red Badger · 88 replies
    https://scitechdaily.com ^ | FEBRUARY 6, 2021 | By GRINNELL COLLEGE
    A person falling into a black hole and being stretched while approaching the black hole’s horizon. Credit: Leo Rodriguez and Shanshan Rodriguez, CC BY-ND =================================================================== To solve the mysteries of black holes, a human should just venture into one. However, there is a rather complicated catch: A human can do this only if the respective black hole is supermassive and isolated, and if the person entering the black hole does not expect to report the findings to anyone in the entire universe. We are both physicists who study black holes, albeit from a very safe distance. Black holes are among...
  • In a Comprehensive Test, The 'Impossible' EM Drive Has Failed to Produce Thrust… Again

    04/05/2021 7:29:02 AM PDT · by Red Badger · 60 replies
    https://www.sciencealert.com ^ | 5 APRIL 2021 | PAUL M. SUTTER, UNIVERSE TODAY
    (© Elvis Popovic/CGS Society) PHYSICS In a Comprehensive Test, The 'Impossible' EM Drive Has Failed to Produce Thrust… Again PAUL M. SUTTER, UNIVERSE TODAY5 APRIL 2021 The EM Drive is a hypothetical rocket that proponents claim can generate thrust with no exhaust. This would violate all known physics. In 2016, a team at NASA's Eagleworks lab claimed to measure thrust from an EM Drive device, the news of which caused quite a stir. The latest attempt to replicate the shocking results has resulted in a simple answer: the Eagleworks measurement was from heating of the engine mount, not any new...
  • NightShine Solar Panels “Game-Changers” In Fight Against Climate Change!

    04/01/2021 10:52:47 AM PDT · by norwaypinesavage · 69 replies
    Watt's Up With That ^ | 4/1/2121 | J I Thacker
    A new prototype solar panel from the Technical Institute of Copenhagen (TIC) promises to be a game changer for renewable energy prospects....Traditional solar panels work by intercepting photons. Naturally the Earth is opaque to photons, so at night the panels are useless. But the Sun emits another kind of particle that shines right through the Earth, even at night: solar neutrinos....neutrinos pass through the Earth, they do change on their way through – a bit like the way white light is changed into a rainbow as it passes through a triangular prism.” Keying in on this relationship, Pierrot was able...
  • Powerful Magnetic Fields Surrounding Black Hole Are Strong Enough to Resist Gravity

    03/25/2021 11:23:42 AM PDT · by Red Badger · 25 replies
    https://scitechdaily.com ^ | MARCH 25, 2021 | By UNIVERSITY OF THE WITWATERSRAND
    Polarized view of the black hole in M87. The lines mark the orientation of polarization, which is related to the magnetic field around the shadow of the black hole. Credit: EHT Collaboration ===================================================================== Wits University astrophysicists are the only two scientists on African continent that contributed to the study. The Event Horizon Telescope (EHT) collaboration, a multinational team of over 300 scientists including two astrophysicists from the University of the Witwatersrand (Wits University), has revealed a new view of the massive object at the center of the M87 galaxy: how it looks in polarized light. This is the first time...
  • Observe: There’s a new nova visible in Cassiopeia right now

    03/20/2021 2:22:09 AM PDT · by LibWhacker · 26 replies
    Astronomy Magazine ^ | 3/19/2021 | Alison Klesman
    An amateur astronomer just spotted a strange new object in the sky. And it’s bright enough for you to see with binoculars from your backyard. The discovery image (left) of a new nova that recently appeared in the constellation Cassiopeia. The right image shows how the same region of the sky appeared just four days prior. Yuji Nakamura At around 7 P.M. JST on the evening of March 18, Japanese amateur astronomer Yuji Nakamura spotted something strange: A new point of light in the familiar constellation Cassiopeia the Queen. Researchers at Kyoto University quickly followed up using the 3.8-meter Seimei...
  • More Results From The Large Hadron Collider Point to Entirely New Physics

    03/24/2021 10:18:58 PM PDT · by BenLurkin · 22 replies
    sciencealert.com ^ | 24 MARCH 2021 | MIKE MCRAE
    Update (24 March 2021): The Large Hadron Collider beauty (LHCb) experiment is still insisting there's a flaw in our best model of particle physics. As explained below, previous results comparing the collider's data with what we might expect from the Standard Model threw up a curious discrepancy by around 3 standard deviations, but we needed a lot more information to be confident it truly reflected something new in physics. Newly released data have now pushed us closer to that confidence, putting the results at 3.1 sigma; there's still a 1 in 1,000 possibility that what we're seeing is the result...
  • New Kind of Space Explosion Reveals the Birth of a Black Hole

    03/24/2021 6:41:54 AM PDT · by Red Badger · 15 replies
    https://www.quantamagazine.org ^ | March 10, 2021 | Jonathan O'Callaghan
    The new explosion, illustrated here, is bluer than an ordinary supernova and more than 100 times as bright. SAKKMESTERKE / Science Source =================================================================== A supernova-like explosion dubbed the Camel appears to be the result of a newborn black hole eating a star from the inside out. ================================================================ In 2018, astronomers were shocked to find a bizarre explosion in a galaxy 200 million light-years away. It wasn’t like any normal supernova seen before — it was both briefer and brighter. The event was given an official designation, AT2018cow, but soon went by a more jovial nickname: the Cow. The short-lived event...
  • New Result From Large Hadron Collider Challenges Leading Theory in Physics – Cannot Be Explained by Our Current Laws of Nature

    03/23/2021 6:51:43 AM PDT · by Red Badger · 34 replies
    https://scitechdaily.com ^ | MARCH 23, 2021 | By IMPERIAL COLLEGE LONDON
    LHCb experiment cavern at LHC. Credit: CERN Imperial physicists are part of a team that has announced ‘intriguing’ results that potentially cannot be explained by our current laws of nature. The LHCb Collaboration at CERN has found particles not behaving in the way they should according to the guiding theory of particle physics – the Standard Model. The Standard Model of particle physics predicts that particles called beauty quarks, which are measured in the LHCb experiment, should decay into either muons or electrons in equal measure. However, the new result suggests that this may not be happening, which could point...
  • A Star Just Exploded in The Sky, And It Is Easy to Observe

    03/23/2021 6:11:25 AM PDT · by Red Badger · 74 replies
    https://www.sciencealert.com ^ | 23 MARCH 2021 | MICHELLE STARR
    The nova (left) and the same patch of sky four days earlier. (Yuji Nakamura/NAOJ) According to reports in The Astronomer's Telegram, a star in the region of the constellation of Cassiopeia has just gone nova, and the glow is still visible in the night sky. If you live in the Northern Hemisphere and have even a basic telescope, you might want to head out and point it in that direction. The first detection was made on 18 March 2021 by amateur astronomer Yuji Nakamura from the Mie Prefecture in Japan. In four frames captured using a 135-millimeter lens and a...
  • An Astronomer Just Laid Out a Navigation System For Interstellar Space Travel

    03/22/2021 7:55:09 AM PDT · by Red Badger · 73 replies
    https://www.sciencealert.com ^ | 22 MARCH 2021 | MICHELLE STARR
    It's 2021, and we finally don't have to worry quite so much about our spacecraft getting lost in interstellar space. Using the positions and shifting light of stars, both near and far, astronomer Coryn A.L. Bailer-Jones has demonstrated the feasibility of autonomous, on-the-fly navigation for spacecraft traveling far beyond the Solar System. Interstellar space navigation may not seem like an immediate problem. However, already in the last decade human-made instruments have entered interstellar space, as first Voyager 1 (in 2012) and Voyager 2 (in 2018) crossed the Solar System boundary known as the heliopause. It's only a matter of time...
  • Physicists Discover the Elusive Odderon, First Predicted 50 Years Ago

    03/19/2021 11:26:20 PM PDT · by BenLurkin · 9 replies
    Gizmodo ^ | 03/18/2021 | Rose Pastore
    Scientists are celebrating the long-sought discovery of the odderon, a strange phenomenon that appears only rarely when protons collide at high energies, such as inside particle accelerators. Though the odderon was first predicted to exist in the early 1970s, it wasn’t until recently that physicists finally gathered the data they needed at CERN’s Large Hadron Collider to confirm a true discovery. The discovery contributes to physicists’ understanding of how all the matter in the universe interacts at the smallest levels. Unlike the famous Higgs boson, which was officially discovered in 2012, the odderon isn’t a particle exactly. Instead, it’s the...