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15 questions ppt
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|What is a reflectice wave?
|A wave that travels through a mirror but is returnedby the mirrors surface.
|What is a refracted wave?
|When a wave strikes the surface of a transparent medium, like water, at an angle, their direction changes.
|What is reflection?
|The bouncing back of a particule or wave tht strikes a bournary between two media.
|Sound waves are what?
|What does waves energy do?
|Some bounces back and some move into the new medium.
|The second medium must be what?
|Light energy does not what?
|Propagate into the metal, but instead returned in a refleted wave.
|Why is metals like silver and aluminum so shiny?
|Because they reflect almost all the frequencies of visible light.
|The law of reflection states what?
|The angle of incidence and the angle of reflection are equal to each other.
|Whats an incident wave?
|A light wave that strikes a boundary.
|Whats an reflected wave?
|A light wave that bounces off a boundary.
|Whats a normal?
|A line drawn perpendicular to the poinnt where the incidence ray strikes the barrier.
|Whats the angle of incidence?
|The angle formed between the incidence ray and the normal.
|Whats the angle of reflection?
|The angle formed between the reflected ray and the normal.
|Plane mirrors do what?
|Produce only virtual images