Tuesday, May 28, 2013

CD Diffraction

Objective:
Find the Diffraction of a CD.

  Shoot the laser through the detraction gridding and measure the distance between dots to find the lambda 
 
Measuring the delta x
 Data:
 
 
 
 
Conclusion:
We verified the equation D*sin(theta) = n*lambda. To be accurate, we first us tangent inverse to find the angle and plug into sine function in stead of using small angle approximation sine = tangent.
Our error is about 8% which is not bad and within uncertainty.
 

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