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Lazers do not exist. Lasers do, here is a short list of applications:

bar code scanner, pointer, electric eyes, range finders, guidance systems, interferometers, high energy physics, medical/dental, optical disks (cds, dvd, blue ray), laser induced breakdown spectroscopy, matrix assisted laser desorption/ionization mass spectrometry, cutting devices... originally people wondered what the use of lasers could be, now the question is more of what can't a laser do.

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16y ago

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