The first laser consisted of a red ruby rod activated by a photoflash tube that emitted green

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The first laser consisted of a red ruby rod activated by a photoflash tube that emitted green light. Why would a laser composed of a green crystal rod and a photoflash tube that emits red light not work?

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Conceptual Physics

ISBN: 978-0321568090

11th edition

Authors: Paul G. Hewitt

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Question Posted: Mar 25, 2016 06:26 AM

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The first laser consisted of a red ruby rod activated by a photoflash tube that emitted green

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The photons from the photoflash tube must have at least as much ener...View the full answer

Conceptual Physics

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