Eli5; Why do halogen lights get burning hot but LEDS don’t get hot at all?
In: Technology
Different method of operation and different efficiency. Halogen lights are just producing light by making a wire get very, very hot to the point it gets white hot, same as old-style incandescent bulbs–so most of their output is actually heat. LEDs produce light via semiconductor interactions in a diode junction, and are far more efficient, so most of what they produce is light rather than heat. That doesn’t mean they don’t produce heat at all–depending on how your LED lamp is constructed it may have an aluminium heatsink behind the LEDs to soak up the generated heat and allow them to last longer, or the newer “filament” style rely on the gas in the bulb to carry the heat away.
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