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Gems called rubies are used in lasers. true or false
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Gems called rubies are used in lasers.
true or false

User Xomena
by
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2 Answers

7 votes
the answer you are looking for is true
User Muhammed Neswine
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4 votes
True. There are such things as ruby lasers that use a synthetic ruby crystal as its gain medium. 
User Bhavesh Moradiya
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