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Chapter 27 - Light!

Across
The first person to calculate the speed of light
Light easily passes through this kind of material. Atoms absorb energy and reemit it as light.
A wave that is part electric and part magnetic
Frequencies of light just higher than visible light
Massless bundles of concentrated electromagnetic energy
Material that absorb light without reemission.
Frequencies of light just lower than visible light
A partial shadow
Down
A total shadow
Light is a transverse wave that has definite direction.
A thin beam of light
The most famous experimenter to measure the speed of light
The distance light travels in one year
This is formed where light rays cannot reach
The first demonstrator that light travels at a finite speed