PHYS 11 Lecture Notes - Lecture 12: Total Internal Reflection, Points Of The Compass, Refraction
Document Summary
Waves refract: change direction when their speed change. Waves bend when the speed changes gradually. Bend towards the medium where move slower (cold) Caused by sky light reflecting off hot air just above hot black road or flat sand. Light from sky or something above hot road is ebn, so that it appears to come along the dashed line from the hot surface. The distance between crests or troughs is the wavelength. Time for one wave to pass = period = t = 1/ f (frequency) Waves do not go faster in shallow water because v=frequency/wavelength. The stratosphere is hotter than the air below because ozone absorbs uv sunlight. Uv higher up hence hotter as go higher. Waves on ocean surface, seismic l waves. Deep water waves is any width d > l. Shallow water wave has d < l. Deeper water waves d > l, depends on l. A surface water wave that extends to bottom of ocean.
