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<p>color. Also, it cannot approach the very high <a href="page.php?w=Radiance">intensity</a> characteristic of <a href="page.php?w=laser">laser</a>s.</p>

<p><big> Single-color LEDs </big></p>
<p>By <a href="page.php?w=Light-emitting_diode_physics">selection of different semiconductor materials</a>, single-color LEDs can be made that emit light in a narrow band of wavelengths, from the near-infrared through the visible spectrum and into the ultraviolet range. The required operating voltages of LEDs increase as the emitted wavelengths become shorter (higher</p><p>
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