Cosma Home > Communication > Knowledge > Realm > Physical > Electromagnetism




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


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



Electromagnetism Portal (Wikipedia)


electromagnetism : a fundamental physical force that is responsible for interactions between charged particles which occur because of their charge and for the emission and absorption of photons, that is about a hundredth the strength of the strong force, and that extends over infinite distances but is dominant over atomic and molecular distances — called also electromagnetic force. — Webster

OneLook, Free Dictionary, Wiktionary, Urban Dictionary


Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords


Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles. The electromagnetic force usually exhibits electromagnetic fields such as electric fields, magnetic fields and light, and is one of the four fundamental interactions (commonly called forces) in nature. The other three fundamental interactions are the strong interaction, the weak interaction and gravitation. Electromagnetic phenomena are defined in terms of the electromagnetic force, sometimes called the Lorentz force, which includes both electricity and magnetism as different manifestations of the same phenomenon.

The electromagnetic force plays a major role in determining the internal properties of most objects encountered in daily life. Ordinary matter takes its form as a result of intermolecular forces between individual atoms and molecules in matter, and is a manifestation of the electromagnetic force. Electrons are bound by the electromagnetic force to atomic nuclei, and their orbital shapes and their influence on nearby atoms with their electrons is described by quantum mechanics. The electromagnetic force governs all chemical processes, which arise from interactions between the electrons of neighboring atoms. — Wikipedia

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



Electricity & Magnetism (Wolfram Alpha)


Electronics (Innovations Report)


CODATA Internationally recommended values of the Fundamental Physical Constants, Electromagnetic (NIST Reference on Constants, Units and Uncertainty)


How Electricity Works (HowStuffWorks)
Electric Power Science Tracer Bullet (Library of Congress)
Electrical Engineering Subject Guide (University of Virginia Libraries)
Electrical Engineering (Wolfram Alpha)



The Kite Experiment (Wikipedia)

Lighting A Revolution: Joseph W. Swan (Smithsonian National Museum of American History)
Thomas Edison, Joseph Swan and The Real Deal Behind the Light Bulb (CIO)


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



Explore the Electromagnetic Spectrum (Space Place, NASA)
Electricity and Magnetism (Fact Monster)


Electricity and Magnetism (MIT OCW Physics)
OER Commons: Open Educational Resources


Electromagnetism (Phys.org), NPR Archives









Snap Circuits Kits (Elenco)



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.

  • Galileo sunspot sketches versus modern 'deep...
    on April 15, 2021 at 12:29 pm

    It's a fascinating thought to consider.

  • Using sound waves to make patterns that never...
    on April 14, 2021 at 5:48 pm

    Mathematicians and engineers at the University of Utah have teamed up to show how ultrasound waves can organize carbon particles in water into a sort of pattern that never repeats. The results, they say, could result in materials called "quasicrystals" with custom magnetic or electrical properties.

  • Telescopes unite in unprecedented observations of...
    on April 14, 2021 at 2:24 pm

    In April 2019, scientists released the first image of a black hole in galaxy M87 using the Event Horizon Telescope (EHT). However, that remarkable achievement was just the beginning of the science story to be told.

  • Experimental observation of the elastic range...
    on April 14, 2021 at 1:50 pm

    When long-chain flexible polymers are dissolved in a turbulent flow, the flow properties can be changed drastically by reducing the drag and enhancing the mixing. A fundamental riddle in materials science is to understand how these polymer additives interact with different spatial scales in turbulent flow to alter the turbulence energy transfer. In a new report now on Science Advances, Yi-Bao Zhang and a research team showed how turbulent kinetic energy could be transferred across different […]

  • Stellar feedback and an airborne observatory:...
    on April 13, 2021 at 8:50 pm

    In the southern sky, situated about 4,300 light years from Earth, lies RCW 120, an enormous glowing cloud of gas and dust. This cloud, known as an emission nebula, is formed of ionized gases and emits light at various wavelengths. An international team led by West Virginia University researchers studied RCW 120 to analyze the effects of stellar feedback, the process by which stars inject energy back into their environment. Their observations showed that stellar winds cause the region to expand […]