PHYS 1302W Lecture Notes - Lecture 1: Transverse Wave
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Where v is the velocity, is the wavelength, and f is a frequency constant. Then in a material with index of refraction n. Used in bike reflectors and corner reflectors on the moon. Suppose light is passing from a material of higher n into a material of lower n. For any larger value of a, there is no solution of snell"s law. All light from above the water comes to an observer in a cone whose angle is. A thin toast or plastic fiber used to carry a light signal. If 1> crit, there is total internal reflection. As long as the cable has no sharp bounds, you an keep it 100% inside the cable. This allows for long distance communications at the speed of light. Under the right (or wrong) circumstances, the slight variation of n with can lead to a separation of the different wavelength components in a mixed beam of light.
