by Vinny
There has been a debate for a while that instead of turning off the lights when you leave a room, keep them on constantly to save the energy it takes to turn them on and off. Sometime last year the Mythbusters of Discovery Channel proved this wrong. What was found out is that a regular light bulb's start up energy is equivalent to having it on for around 0.5 seconds. Even with the huge lights that take a while to warm up take as much electricity as about 20 seconds of constant light. So always turn off those lights that aren't helping to save the environment, and your money.
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