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25.1 The Ray Aspect of Light
Straight-line rays as a workable stand-in for waves whenever objects are far larger than a wavelength, and the routes light takes to an eye.
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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.