A laser welder

 


Microsoft's concise encyclopedia for kids and teens

sample articles by April Holladay

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Fiber Optics, a branch of optics dealing with the transmission of light through hair-thin, transparent fibers. Light signals that enter at one end of a fiber travel through the fiber with very low loss of light, even if the fiber is curved. A basic fiber-optic system consists of a transmitting . . .

Laser , a device that produces and amplifies light. The word laser is an acronym for; Light Amplification by Stimulated Emission of Radiation. Laser light is very pure in color, can be extremely intense, and can be directed with great accuracy. Lasers are used in many . . .

Solar Energy, radiation produced by nuclear fusion reactions deep in the Sun's core (see Nuclear Energy). The Sun provides almost all the heat and light Earth receives and therefore sustains every living being.  Solar energy travels to Earth through . . .