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Physics Central: Physics in Action (American Physical Society)
Physical Sciences Subject Guide (Library of Congress)
Introductory Physics Science Tracer Bullet (Library of Congress)
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Physical Science Subject Primer (National Network of Libraries of Medicine)
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CRC Handbook of Chemistry and Physics Online (99th Edition)

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Dictionary

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

Encyclopedia

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

Eric Weisstein’s World of Physics (ScienceWorld, Wolfram Research)
Encyclopædia Britannica

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Philosophical research online: Philosophy of Physical Science (PhilPapers)

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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

Encyclopædia Britannica

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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.

  • Galaxies in the very early universe were...
    on October 30, 2020 at 4:00 am

    (University of Copenhagen) Massive galaxies were already much more mature in the early universe than previously expected. This is the conclusion of an international team of astronomers who studied distant galaxies with the Atacama Large Millimeter/submillimeter Array (ALMA). The result is now published by the National Radio Astronomy Observatory.

  • A world record in detecting extremely low levels...
    on October 30, 2020 at 4:00 am

    (University of Helsinki) Photoacoustic spectroscopy applied to background-free analyses was used to measure unprecedentedly small trace gas concentrations. Teemu Tomberg from the University of Helsinki developed detection methods that make it possible to measure extremely small traces of various gases.

  • New study reveals United States a top source of...
    on October 30, 2020 at 4:00 am

    (Ocean Conservancy) The United States ranks as high as third among countries contributing to coastal plastic pollution when taking into account its scrap plastic exports as well as the latest figures on illegal dumping and littering in the country.

  • Can glucose-lowering drugs impact mortality in...
    on October 30, 2020 at 4:00 am

    (The MIT Press) Peer reviews of a new study examining the relationship between Type 2 Diabetes and COVID-19 say the research is reliable and relevant, but also call for further investigation of this vital topic.

  • Smart tablecloth can find fruit and help with...
    on October 30, 2020 at 4:00 am

    (Dartmouth College) This interactive fabric can identify items and find lost valuables. When an object or an object's status is determined, the fabric can trigger a desired action or prompt.

  • Specially-adapted drones gather data from...
    on October 30, 2020 at 4:00 am

    (University of Bristol) Specially-adapted drones developed by an international team have been gathering data from never-before-explored volcanoes that will enable local communities to better forecast future eruptions.The cutting-edge research at Manam volcano in Papua New Guinea is also improving scientists' understanding of how volcanoes contribute to the global carbon cycle, key to sustaining life on Earth.

  • In a hurry to develop drugs? Here's your cHAT
    on October 30, 2020 at 4:00 am

    (Rice University) Rice University scientists develop cHAT to simplify the reduction of alkenes to more useful intermediate molecules for drugs and other useful chemical compounds.

  • Prize for 'clean earth technologies'
    on October 30, 2020 at 4:00 am

    (Flinders University) Flinders University Associate Professor Justin Chalker has won the Prize for New Innovators in the 2020 Prime Minister's Prizes for Science.His discovery and development of a new class of polymers that provide sustainable solutions to some of humanity's greatest challenges - clean air, fresh water and sustainable food production - has led to a global commercialisation and distribution agreement with Clean Earth Technologies.

  • Dynamic photonic barcodes record energy transfer...
    on October 30, 2020 at 4:00 am

    (SPIE--International Society for Optics and Photonics) Chen's group recently developed bioresponsive dynamic barcodes, introducing the concept of resonance energy transfer at the interface of the microcavity.

  • RUDN University chemist developed green method...
    on October 30, 2020 at 4:00 am

    (RUDN University) A chemist from RUDN University suggested an eco-friendly method for the synthesis of dapsone, a substance that inhibits the growth of malaria and leprosy agents. The main component of the new reaction is hydrogen peroxide that does not form environmentally destructive compounds, and the only by-product is simple water. Unlike other technologies, this method includes only one stage of dapsone production and does not require high temperatures. The catalyst of the reaction can be […]


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

  • A new spin on atoms gives scientists a closer...
    on October 30, 2020 at 5:14 pm

    When atoms get extremely close, they develop intriguing interactions that could be harnessed to create new generations of computing and other technologies. These interactions in the realm of quantum physics have proven difficult to study experimentally due the basic limitations of optical microscopes.

  • New model that describes the organization of...
    on October 30, 2020 at 3:39 pm

    At first glance, a pack of wolves has little to do with a vinaigrette. However, a team led by Ramin Golestanian, Director at the Max Planck Institute for Dynamics and Self-Organization, has developed a model that establishes a link between the movement of predators and prey and the segregation of vinegar and oil. They expanded a theoretical framework that until now was only valid for inanimate matter. In addition to predators and prey, other living systems such as enzymes or self-organizing […]

  • Ultrapure copper for an ultrasensitive dark...
    on October 30, 2020 at 1:50 pm

    In February and March, three batches of copper plates arrived at Fermilab and were rushed into storage 100 meters underground. The copper had been mined in Finland, rolled into plates in Germany and shipped across land and sea to the lab—all within 120 days. In the quest to detect dark matter, the mysterious substance making up 85% of the matter in the universe, every day that the copper spent above ground mattered.

  • Using game-theory to look for extraterrestrial...
    on October 30, 2020 at 1:40 pm

    Astronomer Eamonn Kerins with the University of Manchester has developed an approach to looking for intelligent extraterrestrial beings on other planets that involves using game theory. He has written a paper describing his ideas and has uploaded it to the arXiv preprint server.

  • Scientists repurpose MRI magnet for new...
    on October 30, 2020 at 12:55 pm

    A limiting factor in modern physics experiments is the precision at which scientists can measure important values, such as the magnetic field within a detector. Scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory and their collaborators have developed a unique facility to calibrate field measurement devices and test their limits inside powerful magnetic fields.

  • Density fluctuations in amorphous silicon...
    on October 29, 2020 at 6:40 pm

    For the first time, a team at HZB has identified the atomic substructure of amorphous silicon with a resolution of 0.8 nanometres using X-ray and neutron scattering at BESSY II and BER II. Such a-Si:H thin films have been used for decades in solar cells, TFT displays, and detectors. The results show that three different phases form within the amorphous matrix, which dramatically influences the quality and lifetime of the semiconductor layer.

  • World's record entanglement storage sets up a...
    on October 29, 2020 at 5:05 pm

    Researchers from Sorbonne University in Paris have achieved a highly efficient transfer of quantum entanglement into and out of two quantum memory devices. This achievement brings a key ingredient for the scalability of a future quantum internet.

  • Researchers find direction decided by rate of...
    on October 29, 2020 at 2:32 pm

    Flip a coin. Heads? Take a step to the left. Tails? Take a step to the right. In the quantum world? Go in both directions at once, like a wave spreading out. Called the 'walker analogy,' this random process can be applied in both classical and quantum algorithms used in state-of-the-art technologies such as artificial intelligence and data search processes. However, the randomness also makes the walk difficult to control, making it more difficult to precisely design systems.

  • Bumper crop of black holes in new gravitational...
    on October 29, 2020 at 1:16 pm

    Only a few years ago, scientists the world over celebrated as the first-ever gravitational waves were detected—confirming a long-held scientific theory and opening up an entirely new field of research.

  • Physicists circumvent centuries-old theory to...
    on October 28, 2020 at 8:49 pm

    A team of scientists including two physicists at the University of Sussex has found a way to circumvent a 178-year old theory which means they can effectively cancel magnetic fields at a distance. They are the first to be able to do so in a way which has practical benefits.


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.

  • Clock comparison using black holes
    by Rüdiger Haas on October 29, 2020 at 12:00 am

    Nature Physics, Published online: 29 October 2020; doi:10.1038/s41567-020-01071-5Observing accreting black holes in the early Universe allows precise comparison of clocks over intercontinental distances on Earth. This is achieved with a novel observation strategy using the next generation of very long baseline interferometry systems.

  • Publisher Correction: Ultrasound evidence for a...
    by S. Benhabib on October 28, 2020 at 12:00 am

    Nature Physics, Published online: 28 October 2020; doi:10.1038/s41567-020-01090-2Publisher Correction: Ultrasound evidence for a two-component superconducting order parameter in Sr2RuO4

  • The Heisenberg limit for laser coherence
    by Travis J. Baker on October 26, 2020 at 12:00 am

    Nature Physics, Published online: 26 October 2020; doi:10.1038/s41567-020-01049-3The coherence of a close-to-ideal laser beam can be quadratically better than what was believed to be the quantum limit. This new Heisenberg limit could be attained with circuit quantum electrodynamics.

  • Isotopy and energy of physical networks
    by Yanchen Liu on October 19, 2020 at 12:00 am

    Nature Physics, Published online: 19 October 2020; doi:10.1038/s41567-020-1029-zRecently, a framework was introduced to model three-dimensional physical networks, such as brain or vascular ones, in a way that does not allow link crossings. Here the authors combine concepts from knot theory and statistical mechanics to be able to distinguish between physical networks with identical wiring but different layouts.

  • Electrically tunable correlated and topological...
    by Shaowen Chen on October 12, 2020 at 12:00 am

    Nature Physics, Published online: 12 October 2020; doi:10.1038/s41567-020-01062-6Stacking a monolayer and bilayer of graphene, with a small twist angle between them, creates a tunable platform where the physics of both twisted bilayer graphene and twisted double bilayer graphene can be realized.

  • Directional self-locomotion of active droplets...
    by Mojtaba Rajabi on October 12, 2020 at 12:00 am

    Nature Physics, Published online: 12 October 2020; doi:10.1038/s41567-020-01055-5Active matter particles self-propel but controlling their direction of motion can be challenging. Here the authors place motile bacteria inside microdroplets and control their propulsion by exploiting the asymmetric director structure of the surrounding liquid crystal.

  • Resonant phase-matching between a light wave and...
    by Raphael Dahan on October 12, 2020 at 12:00 am

    Nature Physics, Published online: 12 October 2020; doi:10.1038/s41567-020-01042-wEnergy–momentum phase-matching enables strong interactions between free electrons and light waves. As a result, the wavefunction of the electron exhibits a comb structure, which was observed using photon-induced near-field electron microscopy.

  • Author Correction: Spectroscopic fingerprint of...
    by W. S. Lee on October 9, 2020 at 12:00 am

    Nature Physics, Published online: 09 October 2020; doi:10.1038/s41567-020-01075-1Author Correction: Spectroscopic fingerprint of charge order melting driven by quantum fluctuations in a cuprate


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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.

  • A new spin on atoms gives scientists a closer...
    on October 30, 2020 at 5:28 pm

    A team of researchers has developed a new way to control and measure atoms that are so close together no optical lens can distinguish them.

  • 'Green' method for making pharmaceutical...
    on October 30, 2020 at 4:25 pm

    Scientists develop cHAT to simplify the reduction of alkenes to more useful intermediate molecules for drugs and other useful chemical compounds.

  • Dynamic photonic barcodes record energy transfer...
    on October 30, 2020 at 4:25 pm

    A team recently developed bioresponsive dynamic barcodes, introducing the concept of resonance energy transfer at the interface of the microcavity.

  • A new way to create a spectrum of natural-looking...
    on October 30, 2020 at 3:18 pm

    Northwestern University researchers have developed a new way to create a spectrum of natural-looking hair colors, ranging from blond to black, by using enzymes to catalyze synthetic melanin.

  • A world record in detecting extremely low levels...
    on October 30, 2020 at 3:18 pm

    Photoacoustic spectroscopy applied to background-free analyses was used to measure unprecedentedly small trace gas concentrations. Researchers developed detection methods that make it possible to measure extremely small traces of various gases.

  • Difficult to build a family after exposure to...
    on October 30, 2020 at 3:18 pm

    People who have been exposed to chemical warfare agents (CWAs) feel uncertain, decades after the exposure, about their survival and ability to build a family, a new study shows. Women are more severely affected than men.

  • Catalysts for isotactic polar polypropylenes
    on October 30, 2020 at 3:18 pm

    Polypropylene (PP) is one of the most widely used plastics in the world. By controlling the spatial orientation of the propylene building blocks and additional polar components, it should be possible to create a new generation of attractive, engineered, specialty plastics, with improved wettability or enhanced degradability, based on PP. Scientists have now introduced the basis for a new class of palladium catalysts for such polymerizations.

  • Researchers devise new method to get the lead out
    on October 30, 2020 at 3:17 pm

    Researchers have devised a simple, quick and inexpensive way to quantify how much lead is trapped by a water filter.

  • Flash graphene rocks strategy for plastic waste
    on October 30, 2020 at 1:22 pm

    Scientists advance a new technique to make graphene from waste with a focus on plastic.

  • Comparing sensitivity of all genes to chemical...
    on October 29, 2020 at 9:16 pm

    An environmental health scientist has used an unprecedented objective approach to identify which molecular mechanisms in mammals are the most sensitive to chemical exposures.