light energy - a form of energy that travels in waves and can be seen by the human eye. , medium - a substance or material in which something goes through , reflection - the bouncing of light, heat, or sound off a surface , refraction - the bending of light as it passes at an angle from one type of matter into another , absorption - the taking in or soaking in of energy or liquid , opaque - an object that does not allow light to pass through; the light is either reflected or absorbed by the object, translucent - allows SOME light to pass through, transparent - allows virtually ALL light to pass through ,

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