Explain how interference in wedge shaped film is used to test flatness of given glass plate.

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written 6.2 years ago by

vermavarsha432 • 1.0k

modified 4.9 years ago by

sanketshingote • 100

advanced engineering physics

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written 6.1 years ago by

vermavarsha432 • 1.0k

1 The phenomenon of interference is used in testing the plainness of the surface of glass plate .

2 It two surfaces OA and OB are perfectly plane, the air film between them would gradually vary in thickness from O to A. The fringes are of equal thickness as each …

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