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science

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Across
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lens that possesses at least one surface that curves inwards
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Not able to see through it
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Visible energy
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a type of lighting fixture that utilizes a lamp
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the angle that an incident line or ray makes with a perpendicular to the surface at the point of incidence
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lines in which light may seem to stream from the sun or any luminous body
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the angle made by a reflected ray with a perpendicular to the reflecting surface
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Something not capable of producing light
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a layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass from the optic nerve to the brain
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Something that can let some light pass through
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the biochemical emission of light by living organisms
Down
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the distance between successive crests of a wave
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the angle made by a refracted ray with a perpendicular to the refracting surface
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Something that lets all light pass through
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emitting light as a result of being heated
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Phosphorescence is light emitted after exposure to radiation, or produced by something that doesn't produce flame or heat
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the emission of light during a chemical reaction that does not produce significant quantities of heat
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Something full of light
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A lens where at least one side bends out
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the strength and vitality required for sustained physical or mental activity