What is the relationship between the angle of incidence and the angle of reflection?

The relationship between the angle of incidence and the angle of reflection is defined by the law of reflection, which states that the angle of incidence is equal to the angle of reflection. This principle is fundamental in the field of optics and applies to wave phenomena, including ultrasound waves used in nondestructive testing.

When an ultrasonic wave strikes a boundary between different media, it behaves according to this law. The angle at which the wave approaches the boundary (the angle of incidence) will be the same as the angle at which it reflects away from that boundary (the angle of reflection). This relationship is crucial for interpreting ultrasonic signals and ensuring accurate measurements and inspections during testing processes. Understanding this concept helps in efficiently directing ultrasonic waves towards flaws and accurately assessing their characteristics during NDT evaluations.