Monday, February 7, 2011

60-Second Good-To-Knows 2-7-11

This week’s topic: Physics

Reflection: When a wave hits a barrier, it will reflect, reversing its direction and orientation. Some part of a wave will also reflect if the medium through which a wave is traveling changes from less dense to more dense.

Refraction: When a wave encounters a change in medium, part or all of it will continues on into the same general direction as the original wave. The frequency is unchanged in refraction.

Diffraction: The slight bending of a wave around an obstacle.

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