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ruby laser[′rü·bē ′lā·zər]
An optically pumped solid-state laser that uses a ruby crystal to produce an intense and extremely narrow beam of coherent red light.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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For example, a ruby laser
rangefinder could create a haemorrhage if seen at a range of less than 100 metres, and can cause a retinal lesion at distances of less than one kilometre if the victim is standing directly in the beam.