Задача 40012.

A point source of light with λ = 500 nm is placed at a distance of a = 0,5 m in front of an opaque barrier with a hole radius r = 0,5 mm. B Determine the distance from an obstacle to a point, for which the number m of opened Fresnel zones will be: a) 1; b) 5; c) 10.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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