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"This detailed Guide provides any student with a comprehensive series of useful definitions and descriptions in what is often a very technical area of scientific study. Optical concepts such as refraction, diffraction, and reflection are explained through the use of clear examples. The structure of the human eye and its characteristics are outlined in detail. The principles underlying television and optical disks such as CDs are also explained."^^<http://www.w3.org/2001/XMLSchema#string>
<http://permacharts.com/products/light-optics>