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Lasers 3
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The idea for the laser started as long ago as 1905 when Albert Einstein suggested the simulated emission of light. Light sources ie. candles, florescent substances, torches, and light bulbs give of packets of energy, called photons, when their atoms are excited by energy. Einstein suggested that these atoms could be artificially stimulated to emit ....
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....a light-amplifying device. All of them knew that there were three essential ingredients in making a laser; a florescent material that would emit light when stimulated by radiation from an external energy source, two facing mirrors on the sides of the florescent material, and external energy source.
Theodore Maiman was the first to successfully asse.... |
| Word count: 809 |
Page count: 3 |
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