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Light and Refraction

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Across
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Deflection froma straight path undergone by a light ray or energy wave in passing obliquely from one medium (like air) into another( like glass)
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The return of light or sound waves from a surface
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Allowing light to pass through so that objects behind can be distinctly seen
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The quality of being hot; high temperature
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A lens that possesses at least one surface that curves inwards. It spreads out light rays that have been refracted through it.
Down
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Not able to be seen through, not transparent
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The natural agent that stimulates sight and makes things visible
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The process by which one substance, such as a solid or liquid, takes up another substance, such as a liquid or gas, through minute pores or spaces between its molecules.
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A lens having at least one surface that curves outward like that exterior of a sphere.
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Permitting light to pass through but diffusing it so that persons, objects, etc., on the opposite side are not clearly visible