Force

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Spotlight



New study suggests we might have spotted a fifth force of nature (Fiona MacDonald, Science Alert)
Physicists confirm possible discovery of fifth force of nature (Phys.org)
Has a New, Fifth Force of Nature Been Found? (Mike Wall, Space.com)
A Fifth Force: Fact or Fiction? (Don Lincoln, Senior Scientist, Fermi National Accelerator Laboratory, Live Science)

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Physical Realm
Physical Laws (Constants) Relativity
Matter Molecule, Atom (Periodic Table), Particle
Force Gravity, Electromagnetism (Light, Color)

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force : any of the natural influences (as electromagnetism, gravity, the strong force, and the weak force) that exist especially between particles and determine the structure of the universe — Webster

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Forces in the universe are based on four fundamental interactions. The strong and weak forces are nuclear forces that act only at very short distances, and are responsible for the interactions between subatomic particles, including nucleons and compound nuclei. The electromagnetic force acts between electric charges, and the gravitational force acts between masses. All other forces in nature derive from these four fundamental interactions. For example, friction is a manifestation of the electromagnetic force acting between the atoms of two surfaces, and the Pauli exclusion principle, which does not permit atoms to pass through each other. Similarly, the forces in springs, modeled by Hooke’s law, are the result of electromagnetic forces and the Exclusion Principle acting together to return an object to its equilibrium position. Centrifugal forces are acceleration forces that arise simply from the acceleration of rotating frames of reference — Wikipedia

David Darling’s Internet Encyclopedia of Science, Britannica

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Introduction to Forces (Practical Physics)

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The story of force: from Aristotle to Einstein (Arthur Stinner)

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Physics News -- ScienceDaily Physics News and Research. Why is the universe more partial to matter than antimatter? How could fuel cells be more efficient? Read current science articles on physics.

  • Using light to put a twist on electrons
    on February 26, 2020 at 6:13 pm

    Method with polarized light can create and measure nonsymmetrical states in a layered material.

  • How big is the neutron?
    on February 26, 2020 at 2:54 pm

    The size of neutrons cannot be measured directly: it can only be determined from experiments involving other particles. While such calculations have so far been made in a very indirect way using old measurements with heavy atoms, a team has now taken a different approach. By combining their very accurate calculations with recent measurements on light nuclei, the researchers have arrived at a more direct methodology.

  • Radio waves detect particle showers in a block of...
    on February 26, 2020 at 2:12 pm

    A cheap technique could detect neutrinos in polar ice, eventually allowing researchers to expand the energy reach of IceCube without breaking the bank.

  • A faster, easier way to build diamond
    on February 25, 2020 at 9:42 pm

    With the right amount of pressure and surprisingly little heat, a substance found in fossil fuels can transform into pure diamond.

  • From China to the South Pole: Joining forces to...
    on February 25, 2020 at 5:29 pm

    A new study indicates that the next generation of neutrino experiments may well find the answer to one of the most pressing issues in neutrino physics.


Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Bilingual mash ups: Counterintuitive findings...
    on February 26, 2020 at 8:39 pm

    A new study exposes the fallacy of relying on pronunciation as a measure of linguistic proficiency. The study, 'Revisiting phonetic integration in bilingual borrowing', by Shana Poplack, Suzanne Robillard, Nathalie Dion (all from the University of Ottawa), and John. C. Paolillo (University of Indiana Bloomington) will be published in March 2020 issue of the scholarly journal Language.

  • Isotope movement holds key to the power of fusion...
    on February 26, 2020 at 4:54 pm

    Fusion may be the future of clean energy. The same way the sun forces reactions between light elements, such as hydrogen, to produce heavy elements and heat energy, fusion on Earth can generate electricity by harnessing the power of elemental reactions. The problem is controlling the uniformity of hydrogen isotope density ratio in the fusion plasma—the soup of elements that will fuse and produce energy.

  • Vertical fibers in the suckerfish's suction...
    on February 26, 2020 at 4:00 pm

    As the hitchhikers of the marine world, the remora fish is well known for getting free rides by gripping onto hosts with its suction disc, a highly modified dorsal fin on its head. Now, work investigating the suction disc—appearing February 26 in the journal Matter—reveals that one of the secrets to the fish's strong grip lies within the unique architecture of the lip of the disc.

  • Overlooked arch in the foot is key to its...
    on February 26, 2020 at 4:00 pm

    long-overlooked part of the human foot is key to how the foot works, how it evolved, and how we walk and run, a Yale-led team of researchers said.

  • Study identifies a transition in the strong...
    on February 26, 2020 at 4:00 pm

    Most ordinary matter is held together by an invisible subatomic glue known as the strong nuclear force—one of the four fundamental forces in nature, along with gravity, electromagnetism, and the weak force. The strong nuclear force is responsible for the push and pull between protons and neutrons in an atom's nucleus, which keeps an atom from collapsing in on itself.