- PROMT |
Laws of refraction:
1. Incident and refracted rays lie in the same plane.
2. When a ray of light passes at an angle into a denser medium, it is bent towards the
normal, hence the angle of refraction is smaller than the angle of incidence.
1. .
2. , , .
If the two waves meet out of phase (crest of one coinciding with a trough of the
other), the result is a wave whose amplitude is the difference of the original
amplitudes.
( ), - , - .