I saw an episode of mythbusters where they tested this, and they came
to the conclusion that it's definitely better to turn lightbulbs on
when you leave the room.
For the average lightbulbs they tested, slightly more energy was
consumed turning the bulb on--but it equalized out in like <3 seconds.
Scott
On Nov 15, 2007, at 5:24 PM, Gary VanderMolen wrote:
As a EE major, I doubt that is the case. However, for an incandescent
bulb the tremendous change in filament temperature between off and on
would cause earlier failure of the filament when cycled more often.
Gary VanderMolen [MS-MVP WLM]
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I've always been told that a light takes less power to keep it on
all of the time than it does to turn it on & off. It supposedly takes
alot more electricity to start up a light than just to leave it on.
