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Old 2nd October 2014, 05:32 PM   #35
Ziggurat
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Originally Posted by wogoga View Post
A continual drift in frequency would imply that laser light becomes more and more incoherent after leaving the source.
It implies nothing of the sort. This is not a change in the frequency of light that has already been emitted, that light retains its same frequency. It's merely that light emitted at a later time has a slightly different frequency than light emitted at an earlier time.
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