Halogen lamps are so more efficient than ordinary incandescent lamps,
because they run at a higher temperature and put out more lumens per
watt. Sure, every lamp, even an LED, ultimately creates one watt of
heat per watt of input, but the question is how much of the energy is
useful light on the way to becoming heat.
LEDs aren't as much more efficient than other lights as most people
think. They seem brighter because their output is inherently focused.
They aren't really more efficient than compact fluorescents for area
lighting.
Halogen bulbs might be an inexpensive substitute for ordinary light
bulbs once the clowns in Washington have outlawed the 25-cent kind. --
Mixon
--Mixon
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