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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

Realm : kingdom, sphere, domain — Webster

OneLook, Free Dictionary, Wiktionary

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


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


Physics (Wolfram Alpha)


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

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)




Philosophical research online: Philosophy of Physical Science (PhilPapers)




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

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

Everything you’ve learned in school as “obvious” becomes less and less obvious as you begin to study the universe. For example, there are no solids in the universe. There’s not even a suggestion of a solid. There are no absolute continuums. There are no surfaces. There are no straight lines. — R. Buckminster Fuller

Find out more about these “Fundamentals” on Cosma
Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle

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




SciShow Physics (YouTube Channel)

Center for History of Physics (American Institute of Physics)
History of Physics Exhibits (American Institute of Physics)
All Nobel Prizes in Physics (Nobel Foundation)
Physics History and Terminology (Eric Weisstein’s World of Physics, Wolfram Research)


WorldCat, Library of Congress, UPenn Online Books, Open Library




Crash Course Kids (YouTube Channel)

The Cheerios effect (TED Ed)
Physical Sciences (TED Ed)

Minute Physics (YouTube Channel)

The Physics Classroom (Tom Henderson)
DC Physics Help for Students


Crash Course Physics (YouTube Channel)

How Things Work: An Introduction to Physics (Coursera)
Physical Science Courses (Coursera)
Physics Courses (MIT Opencourseware)
Einstein, Oppenheimer, Feynman: Physics in the 20th Century (MIT Opencourseware)
OER Commons: Open Educational Resources



Careers in Physical Sciences (Physics World)
Careers in Physics (
General Physics (Ask an Astronomer, Cornell University)


American Physical Society (APS)
European Physical Society (EPS)
American Institute of Physics (AIP)


Conference Alerts Worldwide (Conal)

News E-Print Archive (Cornell University)
AAAS EurekaAlert, Nature, Physics World
Science News, Science Daily





Physics (It’s Okay To Be Smart, YouTube Channel)


Performing Arts


OEDILF: The Omnificent English Dictionary In Limerick Form


Song Lyrics


More News …

Physics News - Physics News, Material Sciences, Science News, Physics The latest news in physics, materials science, quantum physics, optics and photonics, superconductivity science and technology. Updated Daily.

  • Aerodynamics of perching birds could inform...
    on May 17, 2022 at 5:37 pm

    If you have ever watched a bird land on a tree branch, you may have noticed that it rapidly pitches its wings upward at a high angle to execute a smooth landing. However, for some birds, they land by folding their wings as they perch instead, creating a sweeping motion as they decelerate.

  • A new law unchains fusion energy
    on May 17, 2022 at 5:13 pm

    Physicists at EPFL, within a large European collaboration, have revised one of the fundamental laws that has been foundational to plasma and fusion research for over three decades, even governing the design of megaprojects like ITER. The update shows that we can actually safely use more hydrogen fuel in fusion reactors, and therefore obtain more energy than previously thought.

  • Rocket engine exhaust pollution extends high into...
    on May 17, 2022 at 3:00 pm

    Reusable space technology has led to a rise in space transportation at a lower cost, as popularized by commercial spaceflights of companies like SpaceX and Virgin Galactic. What is poorly understood, however, is rockets' propulsion emissions creating significant heating and compositional changes in the atmosphere.

  • An intelligent quantum sensor that simultaneously...
    on May 17, 2022 at 2:50 pm

    A team of researchers has built an intelligent sensor—the size of about 1/1000 of the cross-section of a human hair—that can simultaneously detect the intensity, polarization and wavelength of light, tapping into the quantum properties of electrons. It's a breakthrough that could help advance the fields of astronomy, health care, and remote sensing.

  • Identification of kick velocity large enough for...
    on May 17, 2022 at 2:44 pm

    A team of researchers from the Max Planck Institute for Gravitational Physics in Germany and multiple institutions in the U.S. has identified a kick velocity large enough for an individual gravitational wave event after observing a binary black hole merger—a first. In their paper published in the journal Physical Review Letters, the group describes their study of the binary black hole merger GW200129_065458 (now called GW200129) and using models to estimate its recoil velocity.

  • Shaping the future of light through...
    on May 16, 2022 at 8:23 pm

    The technological advancement of optical lenses has long been a significant marker of human scientific achievement. Eyeglasses, telescopes, cameras, and microscopes have all literally and figuratively allowed us to see the world in a new light. Lenses are also a fundamental component of manufacturing nanoelectronics by the semiconductor industry.

  • 'Coarse-graining' can help scientists understand...
    on May 16, 2022 at 5:56 pm

    Microbial communities shape our health and the health of our planet. Some are familiar to humans, like the microbes that reside in the gut, known as our microbiome. Others keep fermenting along mostly under the radar.

  • Quantum magnets in motion
    on May 16, 2022 at 2:06 pm

    The behavior of microscopic quantum magnets has long been a subject taught in lectures in theoretical physics. However, investigating the dynamics of systems that are far out of equilibrium and watching them "live" has been difficult so far. Now, researchers at the Max Planck Institute of Quantum Optics in Garching have accomplished precisely this, using a quantum gas microscope. With this tool, quantum systems can be manipulated and then imaged with such high resolution that even individual […]

  • Cooling a gas of magnetic atoms to create large...
    on May 16, 2022 at 1:55 pm

    n a new study, investigations led by Francesca Ferlaino and Russell Bisset show how to cool an atomic gas into a supersolid with a circular, 2D shape. The method will allow researchers to further study these exotic states of matter and search for features such as turbulent vortices.

  • Searching for cosmic-ray boosted sub-GeV dark...
    on May 16, 2022 at 1:20 pm

    Physicists worldwide are continuing their search for dark matter, an elusive type of matter that does not absorb, reflect or emit light and is believed to make up most of the matter in the universe. A type of dark matter that many teams have been specifically looking for is sub-GeV dark matter, dark matter particles with masses below GeV (giga-electron volt).

Nature Physics - Issue - 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.

  • Evidence for spin swapping in an antiferromagnet
    by Weiwei Lin on May 16, 2022 at 12:00 am

    Nature Physics, Published online: 16 May 2022; doi:10.1038/s41567-022-01608-wElectrical readout of the state of an antiferromagnet is an important goal for spintronic applications. Now, detection of the electrical voltage created by a thermal gradient in a canted antiferromagnet suggests a route for achieving this goal.

  • Quasi-symmetry-protected topology in a semi-metal
    by Chunyu Guo on May 16, 2022 at 12:00 am

    Nature Physics, Published online: 16 May 2022; doi:10.1038/s41567-022-01604-0The concept of quasi-symmetry—a perturbatively small deviation from exact symmetry—is introduced and leads to topological materials with strong resilience to perturbations.

  • Large curvature near a small gap
    by Marc A. Wilde on May 16, 2022 at 12:00 am

    Nature Physics, Published online: 16 May 2022; doi:10.1038/s41567-022-01623-xThe appearance of small local gaps in the electronic band structure of a topological semimetal is attributed to a hidden quasi-symmetry that produces a large Berry curvature.

  • Everything is number
    by Nina Meinzer on May 13, 2022 at 12:00 am

    Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01610-2Everything is number

  • Watch out for the W
    by Stefanie Reichert on May 13, 2022 at 12:00 am

    Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01617-9Watch out for the W

  • A farewell to Letters
    on May 13, 2022 at 12:00 am

    Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01621-zAs conventions in scholarly publishing evolve, it is appropriate to reassess the options that we provide to our authors. In this spirit, Nature Physics will soon stop accepting submissions in our Letter format.

  • A net of networks
    by Stefanie Reichert on May 13, 2022 at 12:00 am

    Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01611-1A net of networks

  • Return of the bats
    by Elizaveta Dubrovina on May 13, 2022 at 12:00 am

    Nature Physics, Published online: 13 May 2022; doi:10.1038/s41567-022-01618-8Return of the bats news Latest news from

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

  • Rocket engine exhaust pollution extends high into...
    on May 17, 2022 at 3:22 pm

    Researchers assessed the potential impact of a rocket launch on atmospheric pollution by investigating the heat and mass transfer and rapid mixing of the combustion byproducts. The team modeled the exhaust gases and developing plume at several altitudes along a typical trajectory of a standard present-day rocket. They did this as a prototypical example of a two-stage rocket to transport people and payloads into Earth's orbit and beyond and found the impact on the atmosphere locally and […]

  • Improved wind forecasts save consumers millions...
    on May 17, 2022 at 3:22 pm

    Scientists determined that by increasing the accuracy of weather forecasts over the last decade, consumers netted at least $384 million in energy savings. The researchers based their predictions on NOAA's High Resolution Rapid Refresh model, which provides daily weather forecasts for every part of the U.S. These include wind speed and direction data, which utilities can use to gauge how much energy their turbines will produce.

  • Desktop air curtain system prevents spread of...
    on May 17, 2022 at 3:22 pm

    Researchers have developed a desktop air curtain system that blocks all incoming aerosol particles. An air curtain, or air door, is a fan-powered ventilation system that creates an air seal over an entryway, but one challenge in developing smaller air curtains is fully blocking emitted aerosol particles over time because it is difficult to maintain the air wall over a long distance.

  • Magnetic nanoparticles in biological vehicles...
    on May 17, 2022 at 1:48 pm

    Magnetic nanostructures are promising tools for medical applications. Incorporated into biological structures, they can be steered via external magnetic fields inside the body to release drugs or to destroy cancer cells. However, until now, only average information on the magnetic properties of those nanoparticles could be obtained, thus limiting their successful implementations in therapies. Now a team has conceived and tested a new method to assess the characteristic parameters of every […]

  • New light on organic solar cells
    on May 17, 2022 at 12:30 pm

    Efficient and environmentally friendly solar cells are required for a transition to a fossil-free energy supply. Researchers at have now mapped how energy flows in organic solar cells, something that previously had been unknown.

  • Ultra-powerful brain scanners offer hope for...
    on May 17, 2022 at 1:31 am

    Ultra-powerful 7T MRI scanners could be used to help identify those patients with Parkinson's disease and similar conditions most likely to benefit from new treatments for previously-untreatable symptoms, say scientists.

  • New theory promises to reshape how we think about...
    on May 16, 2022 at 8:36 pm

    Polymer scientists recently announced that they have solved a longstanding mystery surrounding a nanoscale structure, formed by collections of molecules, called a double-gyroid. This shape is one of the most desirable for materials scientists, and has a wide range of applications; but, until now, a predictable understanding of how these shapes form has eluded researchers.

  • Shaping the future of light through...
    on May 16, 2022 at 7:15 pm

    Harnessing the power of 'phase-change' materials, researchers have demonstrated how reconfigurable metasurfaces -- artificial materials with extraordinary optical properties -- are crucial to the future of nanotechnology.

  • Assessing the impact of loss mechanisms in solar...
    on May 16, 2022 at 4:40 pm

    The superconductor antimony sulfide selenide is a potential candidate for solar materials, but this depends on understanding how to boost its efficiency.

  • Studying the pseudogap in superconducting cuprate...
    on May 16, 2022 at 4:40 pm

    Despite being vital to the study of superconductivity in cuprate materials the physical origins of the pseudogap remain a mystery.


Here are links to pages about closely related subjects.

Knowledge Realm


Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle

Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid


1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.