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Light and Refraction

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