The sine of the angle of a wave front with a flat interface is inversely proportional to the speed of sound in that medium.

Question

Quizplus · Accepted Answer

The sine of the angle of a wave front with a flat interface is related to the speed of sound in that medium through Snell's law, which states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant and is equal to the ratio of the speeds of sound in the two media. This means the relationship is direct rather than inverse.

The Sine of the Angle of a Wave Front with a Flat