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Learn about Physics and the various topics related to Physics with our encyclopedia entries.
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Featured Physics Entry

Rowland, Henry Augustus

Rowland, ROH luhnd, Henry Augustus (1848-1901), was an American physicist. He invented the concave grating for spectrum analysis, and built an improved ruling and dividing engine for making precise rulings on glass or metal surfaces. In his Berlin experiment in 1876, he proved that electrostatic charges of electricity in motion produce a magnetic field similar to the field produced by an electric current in a wire. Rowland also determined the mechanical equivalent of heat, and the value of… More »

THE PHYSICS LIBRARY

Grand unified theories

Grand unified theories, also called GUT's, attempt to unite three of the four fundamental forces... More >>

Physics

Physics is the science devoted to the study of matter and energy. Physicists try to understand... More >>

Reflection

Reflection is the return of a wave of energy, such as light, heat, sound, or radio, after it... More >>

Refraction

Refraction is the bending of a light ray as it travels through the surface of a transparent... More >>

Solid-state physics

Solid-state physics, also called condensed-matter physics, deals with the physical properties of... More >>

MORE PHYSICS CATEGORIES:
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Learn about Particle Physics and get information on topics related to Particle Physics.
> Baryon
> Quark
> Neutrino
> Hadron
> Neutron
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Learn about Physics of Sound and get information on topics related to Physics of Sound.
> Phon
> Acoustics
> Decibel
> Ultrasound
> Sonic boom
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Learn about Physicists and get biographical information on Physicists.
> Braun, Karl Ferdinand
> Guillaume, Charles…
> Meitner, Lise
> Kusch, Polykarp
> Cornell, Eric Allin
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Learn about Electricity & Electronics and get information on topics related to Electricity & Electronics.
> Superconductivity
> Printer
> Armature
> Electric field
> Gauss
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Learn about Energy & Power and get information on topics related to Energy & Power.
> Work
> Efficiency
> Power plant
> Energy supply
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Learn about Heat and get information on topics related to Heat.
> Entropy
> Heat
> Thermodynamics
> Thermometer
> Electric furnace
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Learn about Light and get information on topics related to Light.
> Light meter
> Optics
> Spectrometer
> Ultraviolet rays
> Luminescence
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Learn about Matter and get information on topics related to Matter.
> Crystal
> Gas
> Porosity
> Expansion
> Vapor
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Learn about Mechanics and get information on topics related to Mechanics.
> Wheel and axle
> Bernoulli's principle
> Friction
> Centripetal force
> Foot-pound
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Learn about Nuclear Physics and get information on topics related to Nuclear Physics.
> Radiation
> Gamma rays
> Betatron
> Van Allen belts
> Manhattan Project
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