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Obtain an expression for fringe width in the interference pattern of wedge shape film. How this phenomenon is used to determine thickness of thin paper .
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MEASUREMENT OF THICKNESS OF THIN OBJECTS USING THE AIR-WEDGE TECHNIQUE - PDF Free Download
Determination of the thickness of paper by obtaining fringes in wedge shaped air film.
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Two optically flat plates of glass are separated at one end
An air wedge is formed between two glass plates separated one edge by a very fine wire, as shown in Fig. When the wedge is illuminated from above by 600 nm light
Air Wedge Interference
Lecture 26
Paragraph Question No. 10 and 11 (2 questions) A thin wedge of plastic (n = 1.2) with triangular cross section is viewed from directly above with reflected light of wavelength 2, as