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Lasers And Their Uses
Beginning of paper
We have all at some point in our lives used or seen someone use a laser.
They are used in compact disc players for stereos or computers, laser surgery,
laser printers, holography, cutting and borring metals, communication, bar-code
scanners, etc. Over the past three decades' lasers have become a tool used
daily by many people and they h .... Middle of paper
.... emission. The bombarding photon of the emitted photon may
then strike other excited atoms, stimulating further emission of photons, all
of the same frequency and phase. This process produces a sudden burst of
coherent radiation as all the atoms discharge in a rapid chain reaction. The
light beam produces is usually pencil thin and maintains its size and direction
over very long distances.
Lasers vary greatly in the way they look and wha ....
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Number of words: 843
Number of pages: 4 (approx. 250 words per double-spaced page)
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