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Re: [Phys-l] light bulbs


Ha! A units screwup on a NASA scale - without the price tag, fortunately.

5000F ~ 3000K
3000F ~ 2000K

It would be good to see other numeric workups here.

Brian W

On 3/8/2011 2:57 PM, Karshner, Gary wrote:
... above 3700K Tungsten is a liquid and would not make a very good filament material.

> Let's suppose that a 240 volt, 60 watt lamp that would burn at 5000K
> only heats to 3000K at the lower voltage.