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Keyword: physics

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  • Tiny Laser Transforms Copper Wire Into a 180,000°F Cosmic Furnace

    09/14/2024 6:13:14 PM PDT · by Red Badger · 18 replies
    Scitech Daily ^ | September 14, 2024 | Helmholtz-Zentrum Dresden-Rossendorf Germany
    Artistic view of the imploding wire: a strong current of high-energy electrons (pink) heats up the surface, thus driving subsequent shockwaves that compress the wire radially. Credit: HZDR / T. Toncian, edited Using a novel laser method, scientists mimicked the extreme environments of stars and planets, enhancing our understanding of astrophysical phenomena and supporting nuclear fusion research. Extreme conditions prevail inside stars and planets. The pressure reaches millions of bars, and it can be several million degrees hot. Sophisticated methods make it possible to create such states of matter in the laboratory – albeit only for the blink of an...
  • Magical equation unites quantum physics, Einstein’s general relativity in a first

    09/08/2024 8:54:56 AM PDT · by BenLurkin · 32 replies
    Intersting engineering ^ | 09/07/2024 | Rupendra Brahambhatt
    “We proved that the Einstein field equation from general relativity is actually a relativistic quantum mechanical equation,” the researchers note in their study. In simple words, this new framework connects the science that governs the macroscopic world with that of the microscopic world. Therefore, it has the potential to explain every physical phenomenon known to humanity ranging from the mysterious dark matter in space to the photons emitted by your phone’s flashlight. “To date, no globally accepted theory has been proposed to explain all physical observations,” the researchers added. They claim that their theory can challenge the foundations of physics...
  • Who gets their mass from the Higgs?

    06/04/2018 4:23:21 PM PDT · by BenLurkin · 22 replies
    phys.org ^ | June 4, 2018, | A. M. Sirunyan
    The Higgs field is like an endless ocean through which all matter swims. Some particles are like sponges and sop up mass as they lumber along, while others are as sprightly as tiny minnows and dart right through. … "We know that the Higgs interacts with massive force-carrying particles, like the W boson, because that's how we originally discovered it," said scientist Patty McBride ... "Now we're trying to understand its relationship with fermions." Fermions are particles that click together to form the invisible scaffolding inside atoms. Bosons, on the other hand, are the physical manifestation of forces and perform...
  • Quantum Thermodynamics: Black Holes Might Not Be What We Thought

    09/04/2024 7:34:34 AM PDT · by SunkenCiv · 29 replies
    SciTechDaily ^ | September 3, 2024 | SUNY Polytechnic Institute
    A recent study underscores the dynamic nature of black holes and extends similar thermodynamic characteristics to Extremely Compact Objects, advancing our comprehension of their behavior in quantum gravity scenarios.A paper titled "Universality of the thermodynamics of a quantum-mechanically radiating black hole departing from thermality," published in Physics Letters B highlights the importance of considering black holes as dynamical systems, where variations in their geometry during radiation emissions are critical to accurately describing their thermodynamic behavior.The study also suggests that extremely compact objects (ECOs) share these thermodynamic properties with black holes, regardless of their event horizon status. The significance of this...
  • Photon entanglement could explain the rapid brain signals behind consciousness

    08/29/2024 4:48:35 AM PDT · by zeestephen · 68 replies
    Phys.org (via MSN.com) ^ | 16 August 2024 | David Appell
    A research group in China has shown that many entangled photons can be generated inside the myelin sheath that covers nerve fibers...It could explain the rapid communication between neurons, which so far has been thought to be below the speed of sound, too slow to explain how the neural synchronization occurs.
  • Astronomers Disprove Long-Held Belief About Galaxy Density

    08/20/2024 6:07:06 AM PDT · by Salman · 15 replies
    Space Daily ^ | Aug 20, 2024 | Simon Mansfield
    An international team of astronomers has overturned a longstanding belief that stars and dark matter interact in a mysterious way to create uniform density structures across different galaxies. This finding, published in 'Monthly Notices of the Royal Astronomical Society (MNRAS)', challenges a theory that had perplexed scientists for 25 years. The research team, which includes scientists from Australia, the UK, Austria, and Germany, utilized the Very Large Telescope in Chile to observe and analyze 22 galaxies that are approximately four billion years old. The results revealed that the perceived uniformity in galaxy density may not be a real phenomenon but...
  • Revolutionary Quantum Compass Could Soon Make GPS-Free Navigation a Reality

    08/19/2024 5:17:06 AM PDT · by Red Badger · 49 replies
    Scitech Daily ^ | August 18, 2024 | Sandia National Laboratories
    Sandia National Laboratories’ four-channel, silicon photonic single-sideband modulator chip, measuring 8 millimeters on each side and marked with a green Sandia thunderbird logo, sits inside packaging that incorporates optical fibers, wire bonds, and ceramic pins. Credit: Craig Fritz, Sandia National Laboratories ==================================================================== A milestone in quantum sensing is drawing closer, promising exquisitely accurate, GPS-free navigation. Peel apart a smartphone, fitness tracker or virtual reality headset, and inside you’ll find a tiny motion sensor tracking its position and movement. Bigger, more expensive versions of the same technology, about the size of a grapefruit and a thousand times more accurate, help navigate...
  • 3 big lessons from Einstein’s most famous equation: E=mc²

    08/08/2024 9:58:04 AM PDT · by Red Badger · 112 replies
    Big Think ^ | August 8, 2024 | Ethan Siegel
    More than any other equation in physics, E = mc² is recognizable and profound. But what do we actually learn about reality from it? ===================================================================== This 1934 photograph shows Einstein in front of a blackboard, deriving special relativity for a group of students and onlookers. Although special relativity is now taken for granted, it was revolutionary when Einstein first put it forth, and doesn't even describe his most famous equation, which is E = mc². - Public Domain ====================================================================== Key Takeaways: * First introduced way back in 1905, Einstein’s most famous equation, E = mc², put forth the mathematical formula...
  • Mysterious Antimatter Detection on ISS Sparks Radical New Theories

    08/02/2024 11:22:57 AM PDT · by Red Badger · 22 replies
    Science Alert ^ | August 02, 2024 | Mike McRae
    Unofficial reports of 10 antihelium nuclei smacking into the International Space Station have inspired theoretical physicists to speculate beyond our current models in search of an explanation. While a small handful of cosmic particles might appear trivial, the signature of the antihelium shower is strange enough for researchers to treat the event like a rainstorm in a desert. In their recently published analysis, scientists from the Perimeter Institute for Theoretical Physics in Canada and Johns Hopkins University in the US make a case for considering physics outside of the currently accepted Standard Model, going as far as suggesting dark matter...
  • Hubble Unmasks Universe’s “Invisible Glue” – Stellar Motions Reveal Dark Matter Secrets

    07/30/2024 5:56:12 AM PDT · by Red Badger · 40 replies
    Scitech Daily ^ | JULY 29, 2024 | Space Telescope Science Institute
    A long-term Hubble Space Telescope study of the Draco dwarf galaxy’s stars suggests dark matter is concentrated at the galaxy’s center, supporting the density cusp theory. This finding challenges earlier observations and improves our understanding of dark matter’s role in galaxy formation. (Artist’s concept.) Credit: SciTechDaily.com =================================================================================== The Hubble Space Telescope’s longevity is an asset in gaining clarity about the universe’s invisible glue. When theory and observations favor different results, how can astronomers determine which one is more feasible? Increasing confidence in one theory over another oftentimes requires building a richer dataset to improve current models and lower uncertainties. A...
  • Heaviest element yet within reach after major breakthrough

    07/25/2024 9:27:52 AM PDT · by AdmSmith · 74 replies
    Nature ^ | 23JUL2024 | Katherine Bourzac
    Scientists at the Lawrence Berkeley National Laboratory in Berkeley, California, announced today that they have for the first time used a beam of titanium to make a known superheavy element, livermorium — element 116. After upgrading the lab’s equipment, the team plans to use similar techniques to try to produce element 120. The heaviest element that has been made so far is oganesson, element 118, which was first synthesized in 2002.
  • New quantum microscope shows electrons moving in slow motion

    07/23/2024 4:58:11 PM PDT · by Jonty30 · 18 replies
    https://knowridge.com ^ | July 21, 2024 | By Knowridge
    Physicists at the University of Stuttgart, led by Professor Sebastian Loth, have developed a groundbreaking quantum microscope that can record the movement of electrons at the atomic level with incredibly high spatial and temporal resolution. This new method could significantly advance the way scientists develop materials. Their findings have been published in the journal Nature Physics. “With our new method, we can see things that no one has ever seen before,” says Prof. Loth, the Managing Director of the Institute for Functional Matter and Quantum Technologies at the University of Stuttgart. “This allows us to answer questions about electron movements...
  • NASA Scientist Says Patented ‘EXODUS EFFECT’ Propellantless Propulsion Drive That Defies Physics Is Ready To Go To Space

    07/22/2024 6:47:49 AM PDT · by Red Badger · 67 replies
    The Debrief ^ | JULY 19, 2024 | CHRISTOPHER PLAIN
    A patented experimental propellantless propulsion drive is finally ready to go to space, according to its inventor, a veteran NASA scientist with decades of expertise in electrostatics. [Multiple Videos at Site] Dr. Charles Buhler, the technology’s creator, says the propulsion system may represent a working version of Quantized Inertia, a theory first proposed by University of Plymouth professor Mike McCulloch. The proposition has been subjected to criticism from mainstream scientists in the past because it seemingly violates Newton’s third law of motion. The controversial technology, which The Debrief covered in April, is privately owned by Exodus Propulsion Technologies and is...
  • 10-billion-year-old View of Mysterious Glowing 'Einstein Ring' Reveals Rare Discovery, Challenging Current Theories

    07/18/2024 5:54:57 PM PDT · by SunkenCiv · 24 replies
    The Debrief ^ | July 18, 2024 | Micah Hanks
    The galaxy PJ0116-24, located 10 billion light-years away from Earth, appears to exhibit characteristics that contradict the standard view that galaxy mergers are required to produce such intense luminosity.The groundbreaking findings, which are detailed in a newly published paper in Nature Astronomy, seem to point to the occurrence of rapid star formation in HyLIRGs, revealing that it can occur through internal processes. The discovery presents new challenges to existing notions held by astronomers about how such formations occur...In the past, it was believed that the intense luminosity produced by HyLIRGs was exclusively the result of mergers between galaxies, which result...
  • Deep space really is completely dark, New Horizons shows

    07/18/2024 1:17:05 PM PDT · by Red Badger · 18 replies
    Big Think ^ | JULY 18, 2024 | Ethan Siegel
    JWST deep field vs hubble This region of space, viewed first iconically by Hubble and later by JWST, shows an animation that switches between the two. Both images still have fundamental limitations, as they were acquired from within our inner Solar System, where the presence of zodiacal light influences the noise floor of our instruments, and cannot easily be removed.Credit: NASA, ESA, CSA, STScI, Christina Williams (NSF’s NOIRLab), Sandro Tacchella (Cambridge), Michael Maseda (UW-Madison); Processing: Joseph DePasquale (STScI); Animation: E. Siegel ======================================================================================= KEY TAKEAWAYS: * The darkest night skies, both from Earth as well as from interplanetary space, aren’t completely...
  • Astronomers Found the Ancient Light Source That Literally Turned On the Universe

    07/18/2024 4:21:54 AM PDT · by blueplum · 22 replies
    Popular Mechanics ^ | 11 Jul 2024 | DARREN ORF
    While the “Epoch of Reionization” sounds like the title of a sci-fi novel destined for a Hugo award, this very real era of the universe featured the first light from the very first stars. Before this epoch, the universe was nothing more than a dark void filled with a fog of primordial hydrogen gas—and then, suddenly, there was light. For decades, scientists have searched for a source of radiation powerful enough to have cleared away this fog and introduced light into the universe. Now, an international team of scientists have analyzed the first faintest galaxies ...
  • CERN PHYSICISTS REPORT FIRST DIRECT DETECTION OF ELECTRON NEUTRINOS IN GROUNDBREAKING EXPERIMENT

    07/15/2024 1:03:17 PM PDT · by Red Badger · 39 replies
    The Debrief ^ | JULY 15, 2024 | Micah Hanks
    Electron neutrinos have been experimentally observed for the first time during recent experiments by physicists at CERN, which produced proton-proton collisions at the facility’s Large Hadron Collider (LHC). Neutrinos are neutral subatomic particles possessing almost no mass. First detected in 1956, they possess 1/2 integral spin like all fermions and rarely react with normal matter except through the weak force. Neutrinos come in three different varieties, associated with electrons, muons, and tau particles. Due to their sparring interactions with matter, all three types of neutrinos are regarded as being among the most elusive particles in the universe. Despite this, physicists...
  • Neutron Star Spotted Shooting A Jet Like A Garden Sprinkler For First Time

    07/15/2024 12:35:49 PM PDT · by Red Badger · 7 replies
    IFL Science ^ | JULY 15, 2024 | DR. ALFREDO CARPINETI
    The jet of this extreme object is changing direction creating an S-shape in the sky. ================================================================== One of the most iconic views of Circinus X-1. New research has revealed intriguing new details about this system. Image Credit: X-ray: NASA/CXC/Univ. of Wisconsin-Madison/S. Heinz, et al.; Optical: DSS Radio image of the S-shaped precessing jet launched by the neutron star in Circinus X-1. Image Credit: Fraser Cowie ================================================================== Astronomers have spotted a neutron star whose jet is changing direction for the first time. Likened to a garden sprinkler, the jet is coming from the phenomenal object Circinus X-1, one of the brightest...
  • Scientists Have Developed a New Type of Glass With Unique and Even Contradictory Properties

    07/08/2024 5:56:49 AM PDT · by Red Badger · 21 replies
    Scitech Daily ^ | JULY 8, 2024 | TEL-AVIV UNIVERSITY
    Facile preparation of peptide glass at room temperature using standard lab equipment. Credit: Tel Aviv University ============================================================================== Tel Aviv University researchers have created a unique glass that is both an effective adhesive and highly transparent. This spontaneously forming glass could significantly influence multiple high-tech industries. Researchers from Tel Aviv University (TAU) have created a new type of glass with unique and even contradictory properties, such as being a strong adhesive (sticky) and incredibly transparent at the same time. The glass, which forms spontaneously when comes in contact with water at room temperature, could bring about a revolution in an array...
  • The Closest Black Hole To Us Is Not The One In The Center Of Our Galaxy

    07/10/2024 1:08:36 PM PDT · by Red Badger · 26 replies
    IFL Science ^ | JULY 10, 2024 | STEPHEN LUNTZ
    It’s not even truly part of our galaxy, but a newly discovered black hole in Omega Centauri with a mass at least 20,000 times the Sun is closer than Sagittarius A*. The remnant galactic nucleus known as Omega Centauri has a black hole at its heart, revealed by fast-moving stars in the box at its heart. Image Credit: ESA/Hubble & NASA, M. Häberle (MPIA) =============================================================================== The largest of the star clusters that surround the Milky Way, Omega Centauri, has a black hole at the core with a mass 20,000-50,000 times that of the Sun, new evidence reveals. At 18,000 light...