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Michelson--Morley experiment

Showing Temporal Coherence - Coherence 

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When one of the mirrors is moved away gradually, the time for the beam to travel increases and the infringes become dull and finally are lost

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Showing spatial coherence - http://www.youtube.com/watch?v=sm_U7899EXQ^{Image Removed}

If the space between the two slits is increased, the coherence dies gradually and finally the infringes disappear