Problem 40225.
The soap film, located vertically, forms a wedge due to liquid drainage. Observing the interference fringes in the reflected light of a mercury arc (lambda = 546.1 nm), it was found that the distance between the five fringes is 2 cm. Find the angle of the wedge in seconds if the light falls perpendicular to the surface of the wedge. The refractive index of soapy water is n=1.33.
Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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