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7. Electromagnetic Spectrum

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10. Reflectivity: Absorption:  is the linear absoption coefficient

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14. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Photoluminescence Excitation of electron hole pairs by several mechanisms followed by annihilation with light emission

15. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Fluorescent Lamps simply concentrate photoluminescence to one electron hole pair

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