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Physical : (a) of or relating to physics (b) characterized or produced by the forces and operations of physics (c) having material existence : perceptible especially through the senses and subject to the laws of nature — Webster

OneLook, Free Dictionary, Wiktionary, Urban Dictionary

Realm : kingdom, sphere, domain — Webster

OneLook, Free Dictionary, Wiktionary, Urban Dictionary

Physical Realm : kingdom, sphere, or domain of things that have material existence and are perceptible, especially those things perceptible through the senses and subject to the laws of nature — M.E.Hopper

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Physical universe In religion and esotericism, the term “physical universe” or “material universe” is used to distinguish the physical matter of the universe from a proposed spiritual or supernatural essence. — Wikipedia

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Physical science is a branch of natural science that studies non-living systems, in contrast to life science. It in turn has many branches, each referred to as a “physical science”, together called the “physical sciences”. However, the term physical creates an unintended, somewhat arbitrary distinction, since many branches of physical science also study biological phenomena and branches of chemistry, such as organic chemistry. — Wikipedia

Encyclopædia Britannica

Physics is the natural science that studies matter and its motion and behavior through space and time and that studies the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves. — Wikipedia

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What if?

What If? Answering your hypothetical questions with physics, every Tuesday.

  • Earth-Moon Fire Pole
    by xkcd on May 21, 2018 at 12:00 am

    <article class="entry"> <a href="//what-if.xkcd.com/157/"><h1>Earth-Moon Fire Pole</h1></a> <p id="question">My son (5y) asked me today: If there were a kind of a fireman&#39;s pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?</p> <p id="attribute">Ramon Schönborn, Germany</p> <p>First, let&#39;s get a few things out of the […]

  • Electrofishing for Whales
    by xkcd on March 9, 2017 at 12:00 am

    <article class="entry"> <a href="//what-if.xkcd.com/156/"><h1>Electrofishing for Whales</h1></a> <p id="question">I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don&#39;t […]

  • Toaster vs. Freezer
    by xkcd on February 28, 2017 at 12:00 am

    <article class="entry"> <a href="//what-if.xkcd.com/155/"><h1>Toaster vs. Freezer</h1></a> <p id="question">Would a toaster still work in a freezer?</p> <p id="attribute">—<a href="http://www.maximumfun.org/shows/my-brother-my-brother-and-me">My Brother, My Brother and Me</a>, <a […]

  • Coast-to-Coast Coasting
    by xkcd on February 8, 2017 at 12:00 am

    <article class="entry"> <a href="//what-if.xkcd.com/154/"><h1>Coast-to-Coast Coasting</h1></a> <p id="question">What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?</p> <p id="attribute">—Brandon Rooks</p> <p>Too steep to actually build, […]

  • Hide the Atmosphere
    by xkcd on January 30, 2016 at 12:00 am

    <article class="entry"> <a href="//what-if.xkcd.com/153/"><h1>Hide the Atmosphere</h1></a> <p id="question">Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?</p> <p id="attribute">—Sam Burke</p> <p>The idea here is straightforward: When you dig a hole in the ground, the hole fills up with air.<span […]

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EurekAlert! - Chemistry, Physics and Materials Sciences The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.

  • Insilico to present at the Pioneers '19
    on April 26, 2019 at 4:00 am

    (InSilico Medicine, Inc.) Insilico to present at the Pioneers '19. […]

  • Coffee machine helped physicists to make ion...
    on April 26, 2019 at 4:00 am

    (ITMO University) Scientists from ITMO University have developed and applied a new method for analyzing the electromagnetic field inside ion traps. For the first time, they explained the field deviations inside nonlinear radio-frequency traps. This allows to reconsider the prospects nonlinear traps applications, including ion cooling and studies of quantum phenomena. The results are published in the Journal of Physics B. […]

  • Study: Deep-ocean creatures living a...
    on April 26, 2019 at 4:00 am

    (Oregon State University) Scientists for the first time have tracked how much energy from plants and animals at the surface of the open ocean survives as particles drop to the seafloor more than two miles below, where they say a surprisingly robust ecosystem eagerly awaits. […]

  • Soon-to-be world most sensitive gamma ray...
    on April 26, 2019 at 4:00 am

    (Chinese Academy of Sciences Headquarters) China's Large High Altitude Air Shower Observatory (LHAASO) launched its first set of detectors on April 26, 2019. It marked the beginning of comprehensive research effort in observing and detecting very high energy cosmic rays with the anticipated world most sensitive gamma ray detection facility. […]

  • Bentham's latest Book: Frontiers in...
    on April 26, 2019 at 4:00 am

    (Bentham Science Publishers) 'Frontiers in Cardiovascular Drug Discovery' is an eBook series devoted to publishing the latest advances in cardiovascular drug design and discovery. […]

  • Improving the lifetime of bioelectrodes for solar...
    on April 26, 2019 at 4:00 am

    (Ruhr-University Bochum) The use of proteins involved in the photosynthetic process enables the development of affordable and efficient devices for energy conversion. However, although proteins such as photosystem I are robust in nature, the use of isolated protein complexes incorporated in semi-artificial electrodes is associated with a considerably short long-term stability. Thus, technological application is still limited. Researchers showed that careful operation of the photosystem-based […]

  • Press invitation: Opening conference of LifeTime...
    on April 26, 2019 at 4:00 am

    (Max Delbrück Center for Molecular Medicine in the Helmholtz Association) The Opening Conference of LifeTime will take place on 6 and 7 May in Berlin. The pan-European research initiative aims to develop new technologies for the treatment and early detection of diseases. […]

  • Hubble measurements suggest disparity in Hubble...
    on April 25, 2019 at 4:00 am

    (ESA/Hubble Information Centre) Hubble's measurements of today's expansion rate do not match the rate that was expected based on how the Universe appeared shortly after the Big Bang over 13 billion years ago. Using new data from the NASA/ESA Hubble Space Telescope, astronomers have significantly lowered the possibility that this discrepancy is a fluke. […]

  • IAS researchers detect evidence of 6 new binary...
    on April 25, 2019 at 4:00 am

    (Institute for Advanced Study) Scholars at the Institute for Advanced Study recently submitted a paper announcing the discovery of six new binary black hole mergers, which exceed the detection thresholds defined by the LIGO-Virgo Collaboration. Applying a unique set of signal processing techniques the team, nearly doubled the total number of binary black hole mergers found within the data of LVC's second observing run (O2) from 7 to 13. […]

  • Novel vaccine for colorectal cancer shows...
    on April 25, 2019 at 4:00 am

    (Thomas Jefferson University) The vaccine proves safe in a small sample of human subjects, opening the way for the next phase of testing. […]


Physics News - Physics News, Material Sciences, Science News, Physics Physorg.com provides the latest news on physics, materials, nanotech, science and technology. Updated Daily.

  • Unprecedented insight into two-dimensional...
    on April 26, 2019 at 11:32 am

    For the first time, physicists at the University of Basel have succeeded in measuring the magnetic properties of atomically thin van der Waals materials on the nanoscale. They used diamond quantum sensors to determine the strength of the magnetization of individual atomic layers of the material chromium triiodide. In addition, they found a long-sought explanation for the unusual magnetic properties of the material. The journal Science has published the findings. […]

  • New insights into quantum measurements
    on April 26, 2019 at 10:08 am

    Researchers from the University of Bristol have shed new light on the process of quantum measurement, one of the defining, and most quantum features of quantum mechanics. […]

  • The spin doctors: Researchers discover surprising...
    on April 25, 2019 at 9:28 pm

    Scientists find surprising way to affect information storage properties in metal alloy. […]

  • Researchers transmit data via a semiconductor...
    on April 25, 2019 at 3:05 pm

    You've never heard Dean Martin like this. […]

  • New lens system for brighter, sharper diffraction...
    on April 25, 2019 at 1:57 pm

    To design and improve energy storage materials, smart devices, and many more technologies, researchers need to understand their hidden structure and chemistry. Advanced research techniques, such as ultra-fast electron diffraction imaging can reveal that information. Now, a group of researchers from the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have developed a new and improved version of electron diffraction at Brookhaven's Accelerator Test Facility (ATF)—a DOE […]

  • Cooling with light
    on April 25, 2019 at 1:48 pm

    ETH researchers have cooled a nanoparticle to a record low temperature, thanks to a sophisticated experimental set-up that uses scattered laser light for cooling. Until now, no one has ever cooled a nanoparticle to such low temperatures in a photon cage. Dominik Windey and René Reimann – a doctoral student and postdoc in the group led by Lukas Novotny, Professor of Photonics – have succeeded in cooling a 140 nanometre glass bead down to a few thousandths of a degree above […]

  • Researchers modify magnetic behavior of exotic...
    on April 25, 2019 at 12:14 pm

    People are not the only ones to be occasionally frustrated. Some crystals also show frustrations. They do so whenever their elementary magnets, the magnetic spins, cannot align properly. Cesium copper chloride (Cs2CuCl4) - or CCC for short—is a prime example of frustrated materials. In this crystal, the magnetic copper atoms reside on a triangular lattice and seek to align themselves antiparallel to each other. In a triangle, this does not work, however. This geometric frustration […]

  • A breakthrough in the study of laser/plasma...
    on April 24, 2019 at 7:31 pm

    A new 3-D particle-in-cell (PIC) simulation tool developed by researchers from Lawrence Berkeley National Laboratory and CEA Saclay is enabling cutting-edge simulations of laser/plasma coupling mechanisms that were previously out of reach of standard PIC codes used in plasma research. More detailed understanding of these mechanisms is critical to the development of ultra-compact particle accelerators and light sources that could solve long-standing challenges in medicine, industry, and […]

  • New robust device may scale up quantum tech,...
    on April 24, 2019 at 5:09 pm

    Researchers have been trying for many years to build a quantum computer that industry could scale up, but the building blocks of quantum computing, qubits, still aren't robust enough to handle the noisy environment of what would be a quantum computer. […]

  • Dark matter detector observes rarest event ever...
    on April 24, 2019 at 5:00 pm

    How do you observe a process that takes more than one trillion times longer than the age of the universe? The XENON Collaboration research team did it with an instrument built to find the most elusive particle in the universe—dark matter. In a paper to be published tomorrow in the journal Nature, researchers announce that they have observed the radioactive decay of xenon-124, which has a half-life of 1.8 X 1022 years. […]


Nature Physics - Issue - nature.com science feeds Nature Physics offers a unique mix of news and reviews alongside top-quality research papers. Published monthly, in print and online, the journal reflects the entire spectrum of physics, pure and applied.

  • Topological triply degenerate point with double...
    by Yihao Yang on April 22, 2019 at 12:00 am

    Topological triply degenerate point with double Fermi arcsTopological triply degenerate point with double Fermi arcs, Published online: 22 April 2019; doi:10.1038/s41567-019-0502-zIn acoustic metamaterials, unconventional chiral quasiparticles exhibit multifold band degeneracy points, each carrying non-zero topological charges, giving rise to the topologically protected negative surface refraction. […]

  • Oscillating droplet trains in microfluidic...
    by O. Cybulski on April 22, 2019 at 12:00 am

    Oscillating droplet trains in microfluidic networks and their suppression in blood flowOscillating droplet trains in microfluidic networks and their suppression in blood flow, Published online: 22 April 2019; doi:10.1038/s41567-019-0486-8Droplet sequences in microfluidic networks are shown to form trains that oscillate between branches of the network. Control of this effect suggests a mechanism by which red blood cells might avoid certain pathologies by minimizing oscillations. […]

  • Experimental characterization of two-particle...
    by Andrea Bergschneider on April 22, 2019 at 12:00 am

    Experimental characterization of two-particle entanglement through position and momentum correlationsExperimental characterization of two-particle entanglement through position and momentum correlations, Published online: 22 April 2019; doi:10.1038/s41567-019-0508-6Single-particle resolved measurements in an ultracold-atom experiment reveal an intuitive picture of quantum correlations, providing strong constraints on the full density matrix of the two-particle system in the presence of […]

  • Violating Bell’s inequality with remotely...
    by Y. P. Zhong on April 22, 2019 at 12:00 am

    Violating Bell’s inequality with remotely connected superconducting qubitsViolating Bell’s inequality with remotely connected superconducting qubits, Published online: 22 April 2019; doi:10.1038/s41567-019-0507-7A deterministic violation of the Bell inequality is reported between two superconducting circuits, providing a necessary test for establishing strong enough quantum entanglement to achieve secure quantum communications. […]

  • How to tame a giant oscillation
    by Siva A. Vanapalli on April 22, 2019 at 12:00 am

    How to tame a giant oscillationHow to tame a giant oscillation, Published online: 22 April 2019; doi:10.1038/s41567-019-0510-zExperiments and simulations show that trains of droplets in microfluidic networks undergo synchronized oscillations, and that strategies to prevent these oscillations can help maintain uniform distribution of red blood cells in microcirculation. […]

  • Intimate link between charge density wave,...
    by B. Loret on April 22, 2019 at 12:00 am

    Intimate link between charge density wave, pseudogap and superconducting energy scales in cupratesIntimate link between charge density wave, pseudogap and superconducting energy scales in cuprates, Published online: 22 April 2019; doi:10.1038/s41567-019-0509-5The authors show that the energy gap of the charge density wave is strongly linked to that of the superconducting and pseudogap in several cuprates. This indicates that the same microscopic physics may drive all three phases. […]

  • Putting the gap on the map
    by Jiarui Li on April 22, 2019 at 12:00 am

    Putting the gap on the mapPutting the gap on the map, Published online: 22 April 2019; doi:10.1038/s41567-019-0513-9The measurement of the charge density wave energy gap in high-temperature superconducting cuprates uncovers new links between competing states. […]

  • Deep-subwavelength features of photonic skyrmions...
    by Luping Du on April 15, 2019 at 12:00 am

    Deep-subwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentumDeep-subwavelength features of photonic skyrmions in a confined electromagnetic field with orbital angular momentum, Published online: 15 April 2019; doi:10.1038/s41567-019-0487-7Magnetic textures known as skyrmions have gathered much attention in recent years. It is now shown that focused vector beams can also give rise to photonic skyrmion-like structures. […]


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    Matter & Energy News -- ScienceDaily Detectors and electronics. Learn about every sort of detector, radar system and more from leading research institutes around the world.

    • Improving the lifetime of bioelectrodes for solar...
      on April 26, 2019 at 2:03 pm

      The use of proteins involved in the photosynthetic process enables the development of affordable and efficient devices for energy conversion. However, although proteins such as photosystem I are robust in nature, the use of isolated protein complexes incorporated in semi-artificial electrodes is associated with a considerably short long-term stability. Thus, technological application is still limited. Researchers showed that careful operation of the photosystem-based bioelectrode under the […]

    • Filling in the gaps of connected car data helps...
      on April 26, 2019 at 11:54 am

      An engineer has created a method to fill in the gaps of available connected vehicle data, which will give transportation planners a more accurate picture of traffic in their cities. It is also a more cost-effective data gathering system than what is currently available. […]

    • Surprising quantum effect in hard disk drive...
      on April 26, 2019 at 11:54 am

      Scientists have further explored a new effect that enhances their ability to control the direction of electron spin in certain materials. Their discovery may lead to more powerful and energy-efficient materials for information storage. […]

    • Bridge over coupled waters: Scientists 3D-print...
      on April 25, 2019 at 7:24 pm

      Researchers have 3D-printed an all-liquid ''lab on a chip'' that, with the click of a button, can be repeatedly reconfigured on demand to serve a wide range of applications - from making battery materials to screening drug candidates. […]

    • New method proposed for studying hydrodynamic...
      on April 25, 2019 at 7:24 pm

      By studying how electrons in two-dimensional graphene can literally act like a liquid, researchers have paved the way for further research into a material that has the potential to enable future electronic computing devices that outpace silicon transistors. […]

    • Ice-proof coating for big structures relies on a...
      on April 25, 2019 at 6:37 pm

      A new class of coatings that sheds ice effortlessly from even large surfaces has moved researchers closer to their decades-long goal of ice-proofing cargo ships, airplanes, power lines and other large structures. […]

    • Unprecedented insight into two-dimensional...
      on April 25, 2019 at 6:36 pm

      For the first time, physicists have succeeded in measuring the magnetic properties of atomically thin van der Waals materials on the nanoscale. They used diamond quantum sensors to determine the strength of the magnetization of individual atomic layers of the material chromium triiodide. In addition, they found a long-sought explanation for the unusual magnetic properties of the material. […]

    • Developing a model critical in creating better...
      on April 25, 2019 at 3:56 pm

      Chemical engineers have developed a new computational model to better understand the relationship between water and a type of two-dimensional material. […]

    • Caffeine gives solar cells an energy boost
      on April 25, 2019 at 3:56 pm

      Scientists have discovered that caffeine can help make a promising alternative to traditional solar cells more efficient at converting light to electricity. Their research may enable this cost-effective renewable energy technology to compete on the market with silicon solar cells. […]

    • Left or right handed biomolecules
      on April 25, 2019 at 2:43 pm

      Many biomolecules come in two versions that are each other's mirror image, like a left and a right hand. Cells generally use the left-hand version of amino acids to produce proteins, and uptake mechanisms were thought to share this preference. Scientists have now shown that a prokaryotic transport protein can transport both versions of the amino acid aspartate with equal efficiency. […]