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The term reflection refers to the portion of a wave that is not absorbed by a surface, but is returned from it. When a wave impinges on a surface, some of it will absorbed, and some will "bounce off" the surface. The "bouncing off" is reflection, and the amount that is reflected or absorbed will depend on what the wave is and what kind of surface it encounters, as you might expect. Let's look at just a couple of examples.

Sunlight that impinges on polished aluminum is almost all reflected and only a few percent is absorbed. If that sunlight hits a black surface, most of it will be absorbed and little will be reflected.

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Agnes Bogan

Lvl 13
3y ago

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