Question: (a) The image dimension g' on the plate if the transverse dimension of the source is y = 6.0 mm; (b) The minimum height of
(a) The image dimension g' on the plate if the transverse dimension of the source is y = 6.0 mm;
(b) The minimum height of irregularities, covering the surface of the ball at random, at which the ball obstructs light. Note. As calculations and experience show, that happens when the height of irregularities is comparable with the width of tile Fresnel zone along which the edge of an opaque screen passes.
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