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Small Body Comet, Centaur, Asteroid

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Physical Laws (Constants) Relativity
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Force Gravity, Electromagnetism (Light, Color)

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These are organized by a classification scheme developed exclusively for Cosma. More…

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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)
Physics Resources (Library of Congress)
Physics Internet Resources (Library of Congress)

Physical Science Subject Primer (National Network of Libraries of Medicine)
Physics Subject Primer (National Network of Libraries of Medicine)

Physics World
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Physics Center (Martindale’s Reference Desk)
Physics Databases & Periodic Tables (Martindale’s Reference Desk)
CRC Handbook of Chemistry and Physics Online (99th Edition)

Natural and Physical Sciences Portal (Wikipedia)
Physical Sciences Portal (Wikipedia)
Physics Portal (Wikipedia)

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

Outline


Outline of Physical Science (Wikipedia)
Outline of Physics (Wikipedia)

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Philosophical research online: Philosophy of Physical Science (PhilPapers)

Science

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

Physics Center (Martindale’s Reference Desk)
Encyclopedia of Physics

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How Things Work: An Introduction to Physics (Coursera)
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Book

ISBNdb

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Humor


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.

  • Understanding the role of cardiorespiratory...
    on June 2, 2020 at 4:00 am

    (Beckman Institute for Advanced Science and Technology) Researchers at the Beckman Institute at the University of Illinois at Urbana-Champaign have demonstrated that brain chemistry is sensitive to fitness and body composition.

  • New model shows how diamond-carrying rocks formed...
    on June 2, 2020 at 4:00 am

    (University of Alberta) A new study by University of Alberta geologists is proposing a new model for explaining the eruption of diamond-bearing kimberlites in Northern Alberta.

  • Molecular circuitry: International team breaks...
    on June 2, 2020 at 4:00 am

    (University of Central Florida) An international team with ties to UCF has cracked a challenge that could herald a new era of ultra-high-density computing. For years engineers and scientists around the world have been trying to make smaller and faster electronics. Many teams are working on combining the diode and resistor into a single device. An international team of scientists and engineers have done it and their findings detailed in the June 1 issue of Nature Materials.

  • Study reveals continuous pathway to building...
    on June 2, 2020 at 4:00 am

    (Institute for Advanced Study) A new study conducted by scientists at the Institute for Advanced Study, the Earth-Life Science Institute (ELSI), and the University of New South Wales, among other participating institutions, marks an important step forward in the effort to understand the chemical origins of life. The findings of this study demonstrate how 'continuous reaction networks' are capable of producing RNA precursors and possibly ultimately RNA itself--a critical bridge to life.

  • A storage battery for the entire world
    on June 2, 2020 at 4:00 am

    (University of Freiburg) Freiburg project on battery research funded by the BMBF "World Storage" program

  • New discovery could highlight areas where...
    on June 2, 2020 at 4:00 am

    (Cardiff University) Scientists from Cardiff University have discovered specific conditions that occur along the ocean floor where two tectonic plates are more likely to slowly creep past one another as opposed to drastically slipping and creating catastrophic earthquakes.

  • New CRISPR advance may solve key quandary
    on June 2, 2020 at 4:00 am

    (Burness) A mutation unique to certain cancer tumors is a potential homing beacon for safely deploying CRISPR gene editing enzymes to disarm DNA that makes cancer cells resistant to treatment, while ignoring the gene in normal cells where it's critical to healthy function, according to to a new study from ChristianaCare's Gene Editing Institute in the journal Molecular Cancer Research.

  • CSHL President Bruce Stillman wins Heineken Prize
    on June 2, 2020 at 4:00 am

    (Cold Spring Harbor Laboratory) Cold Spring Harbor Laboratory President and CEO Dr. Bruce Stillman wins the Dr. H.P. Heineken Prize for Biochemistry and Biophysics.

  • Human waste could help combat global food...
    on June 2, 2020 at 4:00 am

    (University of Saskatchewan) Researchers from Cornell University's College of Agriculture and Life Sciences and the Canadian Light Source (CLS) at the University of Saskatchewan have proven it is possible to create nitrogen-rich fertilizer by combining the solid and liquid components of human waste.

  • Aluminum oxide crystal tested as a UV radiation...
    on June 2, 2020 at 4:00 am

    (Fundação de Amparo à Pesquisa do Estado de São Paulo) Doped with carbon and magnesium, the material becomes thermoluminescent in response to UV radiation.


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

  • Promising new method for producing tiny liquid...
    on June 2, 2020 at 3:00 pm

    Microcapsules for the storage and delivery of substances are tiny versions of the type of capsule used for fish oil or other liquid supplements, such as vitamin D. A new method for synthesizing microcapsules, reported in AIP Advances, creates microcapsules with a liquid core that are ideal for the storage and delivery of oil-based materials in skin care products. They also show promise in some applications as tiny bioreactors.

  • Searching for new sources of matter–antimatter...
    on June 2, 2020 at 2:10 pm

    When a particle is transformed into its antiparticle and its spatial coordinates inverted, the laws of physics are required to stay the same—or so we thought. This symmetry—known as CP symmetry (charge conjugation and parity symmetry) – was considered to be exact until 1964, when a study of the kaon particle system led to the discovery of CP violation.

  • New optical technique provides more efficient...
    on June 2, 2020 at 1:50 pm

    The performance of magnetic storage and memory devices depends on the magnetization dynamics of nanometer-scale magnetic elements called nanomagnets. Researchers at UC Santa Cruz have developed a new optical technique that enables efficient analysis of single nanomagnets as small as 75 nanometers in diameter, enabling them to extract critical information for optimizing device performance.

  • Connecting the quantum internet
    on June 2, 2020 at 1:45 pm

    Researchers at the Kastler Brossel Laboratory in Paris have succeeded in implementing a novel "hybrid" entanglement swapping protocol, bringing within reach the connection of disparate platforms in a future, heterogeneously structured, quantum internet.

  • Terahertz radiation can disrupt proteins in...
    on June 2, 2020 at 11:51 am

    Researchers from the RIKEN Center for Advanced Photonics and collaborators have discovered that terahertz radiation, contradicting conventional belief, can disrupt proteins in living cells without killing them.

  • Researchers discover a new type of matter inside...
    on June 2, 2020 at 11:49 am

    A Finnish research group has found strong evidence for the presence of exotic quark matter inside the cores of the largest neutron stars in existence. They reached this conclusion by combining recent results from theoretical particle and nuclear physics to measurements of gravitational waves from neutron star collisions.

  • The cascade to criticality
    on June 2, 2020 at 11:48 am

    Combined theoretical and experimental work has resulted in a novel mechanism through which criticality emerges in quasiperiodic structures—a finding that provides unique insight into the physics on the middle ground between order and disorder.

  • New technique takes 3-D imaging an octave higher
    on June 2, 2020 at 11:42 am

    A collaboration between Colorado State University and University of Illinois at Urbana-Champaign resulted in a new, 3-D imaging technique to visualize tissues and other biological samples on a microscopic scale, with potential to assist with cancer or other disease diagnoses.

  • Killing coronavirus with handheld ultraviolet...
    on June 2, 2020 at 8:12 am

    A personal, handheld device emitting high-intensity ultraviolet light to disinfect areas by killing the novel coronavirus is now feasible, according to researchers at Penn State, the University of Minnesota and two Japanese universities.

  • Orbital ordering triggers nucleation-growth...
    on June 1, 2020 at 2:23 pm

    A new study by researchers from Waseda University and the University of Tokyo found that orbital ordering in a vanadate compound exhibits a clear nucleation-growth behavior.


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.

  • Emergence of criticality through a cascade of...
    by V. Goblot on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0908-7The localization properties of waves in the quasiperiodic chains described by the Aubry–André model and Fibonacci model are investigated. Passing from one model to the other, the system develops a cascade of delocalization transitions.

  • Growth of concomitant laser-driven collisionless...
    by C. Ruyer on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0913-xIn the interaction of ultraintense, short laser pulses with solid targets, the collisionless Weibel instability is observed. For a sufficiently high resistivity of the target, an additional resistive instability appears.

  • Repulsive photons in a quantum nonlinear medium
    by Sergio H. Cantu on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0917-6Repulsive photons in a quantum nonlinear medium

  • Evidence for quark-matter cores in massive...
    by Eemeli Annala on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0914-9The cores of neutron stars could be made of hadronic matter or quark matter. By combining first-principles calculations with observational data, evidence for the presence of quark matter in neutron star cores is found.

  • Independent superconductors and correlated...
    by Yu Saito on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0928-3Here, it is shown that superconductivity can exist without correlated insulating states in twisted bilayer graphene devices a little away from the magic angle. This indicates the two phases compete with each other, in contrast to previous claims.

  • Cosmology at the end of the world
    by Stefano Antonini on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0909-6Braneworld cosmologies describe our universe as a four-dimensional membrane embedded in a bulk five-dimensional anti-de Sitter spacetime. In a possible holographic realization, observers on the brane experience cosmology, and gravity is localized.

  • Atomic superheterodyne receiver based on...
    by Mingyong Jing on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0918-5The Rydberg-atom superhet, based on microwave-dressed Rydberg atoms and a tailored electromagnetically induced transparency spectrum, allows SI-traceable measurements of microwave electric fields with unprecedented sensitivity.

  • Generalized bulk–boundary correspondence in...
    by T. Helbig on June 1, 2020 at 12:00 am

    Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0922-9Boundary-localized bulk eigenstates given by the non-Hermitian skin effect are observed in a non-reciprocal topological circuit. A fundamental revision of the bulk–boundary correspondence in an open system is required to understand the underlying physics.


physicsworld.com: news Latest news from physicsworld.com


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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.

  • Reflecting sunlight to cool the planet will cause...
    on June 2, 2020 at 7:13 pm

    Study finds reflecting sunlight to cool the planet will weaken extratropical storm tracks, causing other global changes.

  • Exotic nanotubes move in less-mysterious ways
    on June 2, 2020 at 6:18 pm

    Researchers capture the first video of boron nitride nanotubes in motion to prove their potential for materials and medical applications.

  • 'A litmus paper for CO2:' Scientists develop...
    on June 2, 2020 at 5:05 pm

    A new sensor for detecting carbon dioxide can be manufactured on a simple piece of paper, according to physicists.

  • Molecular circuitry: International team breaks...
    on June 2, 2020 at 3:43 pm

    An international team has cracked a challenge that could herald a new era of ultra-high-density computing. For years engineers and scientists around the world have been trying to make smaller and faster electronics. Many teams are working on combining the diode and resistor into a single device. An international team of scientists and engineers have now done it.

  • From dark to light in a flash: Smart film lets...
    on June 2, 2020 at 3:43 pm

    Researchers have developed a new easy-to-use smart optical film technology that allows smart window devices to autonomously switch between transparent and opaque states in response to the surrounding light conditions.

  • More efficient biosolar cells modelled on nature
    on June 2, 2020 at 3:01 pm

    Potential sources of renewable energy include protein complexes that are responsible for photosynthesis. However, their efficiency in technical applications still leaves much to be desired. For example, they cannot convert green light into energy. A research team has successfully closed this so-called green gap by combining a photosynthesis protein complex with a light-collecting protein from cyanobacteria.

  • These flexible feet help robots walk faster
    on June 2, 2020 at 3:01 pm

    Roboticists have developed flexible feet that can help robots walk up to 40 percent faster on uneven terrain such as pebbles and wood chips. The work has applications for search-and-rescue missions as well as space exploration.

  • Killing coronavirus with handheld ultraviolet...
    on June 1, 2020 at 11:41 pm

    A personal, handheld device emitting high-intensity ultraviolet light to disinfect areas by killing the novel coronavirus is now feasible, according to researchers.

  • A boost for cancer immunotherapy
    on June 1, 2020 at 7:21 pm

    MIT engineers have found a way to boost the effectiveness of cancer immunotherapy drugs called checkpoint inhibitors. They showed that if they treated mice with these drugs along with new nanoparticles that stimulate the immune system, the therapy became more powerful than checkpoint inhibitors given alone.

  • New biosensor visualizes stress in living plant...
    on June 1, 2020 at 7:21 pm

    Plant biologists have developed a new nanosensor that monitors foundational mechanisms related to stress and drought. The new biosensor allows researchers to analyze changes in real time as they happen involving kinases, enzymes that catalyze key biological activities in proteins. Certain kinases are essential since they are known to be activated in response to drought conditions, triggering the protective closure of small pores on leaf surfaces known as stoma.