Lasers

Title: Lasers
Category: Literature / English | Words: 589 | Pages: 2.5 (approximately 235 words/page)

Lasers

Lasers One of the machines that I liked at the show was the laser-cutting machine. I learned lasers are devices that amplify light and produce coherent light beams, ranging from infrared to ultraviolet. Also lasers harness atoms to store and emit light in a coherent fashion. The electrons in the atoms of a laser medium are first pumped, or energized, to an excited state by an energy source. They are then “stimulated’ by external photons …showed first 75 words of 589 total…

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…showed last 75 words of 589 total…to cut fashion patterns, to synthesize new material, and to attempt to induce controlled nuclear fusion. The powerful short laser pulse also makes possible high-speed photography with an exposure time of several trillionths of a second. Highly directional laser beams were also used for alignment in the construction of the Bay Area Rapid Transit system in San Francisco. Even though lasers do so much some cause carbon dioxide which is harmful to the environment. ------------------------------------------------------------------------ **Bibliography**

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