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vocabulary 9-15

The change in direction of a wave as it crosses the boundry between two media in which the wave travels at different speeds. refraction
The crest, trough, or any continous portion of a two-dimensional or three-dimensional wave in which the vibrations are all the same way at the same time. wavefront
A floating image that appears in the distance and is due to the refraction of light in Earth's atmosprere mirage
The seperation of light into colors arranged according to their frquency, by iteraction with a prism or diffraction grating. dispersion
The minimum angle of incidence for which a light ray is totally reflected within a medium. critical angle
The one hundred percent reflection of light that srikes the boundary between two media at an angle greater than the critical angle. total internal reflection
A transparent fiber, usually of glass or plastic, that can transmit light down its length by means of total internal reflection. optical fiber
Created by: MSeise