Meteorology and Weather
Global Warming

Why do fluorescent lights take so long to warm up?

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Answered 2011-09-14 00:19:09
ANSWER:One of the byproducts of Mercury vapor and argon gas is luminescence or light. The bulb is full of gas and when you turn on the switch, the starter will fire an electrical charge on both ends of the bulb exciting the gas inside and a small amount of mercury emits vapor and the gas molecules collide and excite more molecules nearby until the entire contents are excited. This makes the bulb get brighter until it reaches its maximum brightness. The white phosphorous coating inside the bulb increases illumination. If It didnt have this powder coating, It would be a black light. In cooler temperatures, you can see the pulses of the light as it goes from one end to the other in waves. Tha average bulb reaches full brightness in about 15-20 seconds on average.
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