Light‐emitting diodes

Asanobjectbecomeshotterthewavelength becomes shorter

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Unformatted text preview: ck body radiation occurs when an object absorbs external energy (e.g. through fire or electricity), raises its temperature and this hot object then emits radiation in a range of wavelengths in a continuous spectrum (in the UV, visible and IR; we only see the visible). As an object becomes hotter, the wavelength becomes shorter, frequency higher, and the total energy emitted increases. The wavelengths of emitted light only depend only on its temperature not on its composition. We may study the black body radiation spectrum...
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This note was uploaded on 10/07/2013 for the course C 117 taught by Professor Dragnea during the Spring '09 term at Indiana.

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