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How can we obtain phase difference for two given waves?

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Phase diff. can be obtained in two ways- 
 
(1).for a single particle (performing SHM) at two diff. time or
 
(2)for two particles at same instance  
 
for finding phase diff. for two given waves the second method is used but how and which two particles are choosen to measure phase diff?
 
asked May 18, 2014 in Optics by apratim (200 points)

1 Answer

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Equation for phase difference :
A(t) = A(max) + sin (wt plus minus phase difference)
A= amplitude
w = angular velocity
t = time we are calculating
answered Sep 15, 2017 by giginailo (2,580 points)

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