MadSci Network: Physics

Subject: Accurate measurement in Mickelson-Morley Experiment?

Date: Mon Jul 16 15:54:58 2001
Posted by Bob
Grade level: nonaligned School: none
City: Bangor State/Province: Me Country: USA
Area of science: Physics
ID: 995313298.Ph

I understand that MM measured the speed of light with and perpendicular to 
Earth's motion looking for interference effect and didn't find one.  But 
wouldn't the light waves be out of phase if there was only the tiniest 
difference in the length of the arms of the inferometer?  Why weren't they out 
of phase if the 2 beams traveled slightly different distances?

Re: Accurate measurement in Mickelson-Morley Experiment?

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