cdeutsch/ursuline
Help!
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| What is diffuse reflection? | The reflection of light from a rough surface.
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| Do rays observe the law of reflection? | Yes, each ray obeys the law of reflection.
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| What causes diffuse reflection? | This kind of reflection is caused by the many different angles created by the rough surface cause reflection in many directions.
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| What is considered a polished surface? | This kind of surface has small elevations that areless than about one-eighth the wavelength of the light that falls on the surface.
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| What kind of wavelengths can a polished surface reflect? | Long wavelengths
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| What determines whether or not a reflector is diffused or polished? | The wavelength of the waves it reflects
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| Give an example of a diffused reflector. | Paper encounters millions of tiny flat surfaces facing in all directions, so they are reflected in all directions.
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| Give an example of a polished reflector. | a smooth mirror is only reflected inone direction, an orderly pattern
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| When can an image be seen? | An image is seen in a polished reflector because it can only be seen at certain angles.
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