An LED is commonly used as a "power on" indicator for many electronic devices. For the LED to produce discernible visible light in daylight, the forward-bias current needs to be in the moderate range ...
LED (light-emitting diode) lights...aren't those what are being used more and more for traffic signals? And as taillights? Well, sure, you've probably seen scads of LED taillights-on the back end of ...
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