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Chapter 29 VOCAB

QuestionAnswer
bouncing back of a particle or wave that strikes the boundary between two media Reflection
line perpendicular to a surface, incident rays and reflected rays make equal angles with the line the Normal
angle between an incident ray and the normal to a surface Angle of Incidence
angle between a reflected ray and the normal to a surface Angle of reflection
angle of incidence for a wave that strikes a surface is equal to the angle of reflection. This is true for both partially and totally reflected waves Law of reflection
image formed through reflection or refraction that can be seen by an observer but cannot be projected on a screen because light from the object does not actually come to a focus. virtual image
reflection of waves in many directions from a rough surface Diffuse reflection
Persistence of a sounds, as in an echo, due to multiple reflections. Reverberations
change in direction of a wave as it crosses the boundary between two media in which the wave travels at different speed Refraction
crest, trough, or any continuous portion of a two-dimensional of three-dimensional wave in which the vibrations are all the same way at the same time wave front
floating image that appears in the distance and is due to the refraction of light in Earth's atmosphere Mirage
he sepreation of light into colors arranged according to their frequencies, by interaction with a prism or diffraction grating Dispersion
minimum angles of incidence for which a light ray is totally reflected within a medium Critical Angle
the 100% reflection (with no transmission) of light that strikes the boundary between two media at an angle greater than the critical angle Total internal reflection
Transparent fiber, usually glass or plastic, that can transmit light down its length by means of total internal reflection Optical Fiber
Created by: powers
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