Suppose a luminous sphere of radius r1(such as the sun) is surrounded by a uniform atmosphere of radius r2and index of refraction n. when the sphere is viewed from a location far away in vacuum, what is its apparent radius? you will need to distinguish between the two cases (a) r2> nr1and (b) r2< nr1

Варвара75639    2   14.11.2019 16:31    0