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.

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    on January 22, 2021 at 8:44 pm

    Laser beams are used to change the properties of materials in an extremely precise way. However, the underlying processes generally take place at such unimaginably fast speeds and at such a small scale that they have so far eluded direct observation. Researchers have now managed to film, for the first time, the laser transformation of a crystal structure with nanometer resolution and in slow motion in an electron microscope.

  • Bringing atoms to a standstill: Miniaturizing...
    on January 21, 2021 at 9:31 pm

    Scientists have miniaturized the optical components required to cool atoms down to a few thousandths of a degree above absolute zero, the first step in employing them on microchips to drive a new generation of super-accurate atomic clocks, enable navigation without GPS, and simulate quantum systems.

  • Innovations through hair-thin optical fibers
    on January 21, 2021 at 6:19 pm

    Scientists have built hair-thin optical fiber filters in a very simple way. They are not only extremely compact and stable, but also color-tunable. This means they can be used in quantum technology and as sensors for temperature or for detecting atmospheric gases.

  • Electrons caught in the act
    on January 21, 2021 at 6:17 pm

    Scientists create movies of the ultrafast motion of electrons traveling through an organic semiconductor with atomic-level resolution. This work may lead to more powerful and miniaturized smart devices.

  • Alpha particles lurk at the surface of...
    on January 21, 2021 at 6:17 pm

    Scientists have found evidence of alpha particles at the surface of neutron-rich heavy nuclei, providing new insights into the structure of neutron stars, as well as the process of alpha decay.


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.

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  • X-rays surrounding 'Magnificent 7' may be traces...
    on January 15, 2021 at 4:30 pm

    A new study, led by a theoretical physicist at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab), suggests that never-before-observed particles called axions may be the source of unexplained, high-energy X-ray emissions surrounding a group of neutron stars.

  • Birds that play with others have the biggest...
    on January 15, 2021 at 2:20 pm

    Have you ever seen magpies play-fighting with one another, or rolling around in high spirits? Or an apostlebird running at full speed with a stick in its beak, chased by a troop of other apostlebirds? Well, such play behavior may be associated with a larger brain and a longer life.