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Rattlesnake Guy · 12-31-2011, 09:43 PM

We seem to be able to make car headlights that look like blue super novas. Why can't we make an energy efficient bulb that mimics the same spectral output as a glowing tungsten filament at about 2900 degrees kelvin. Maybe they do, and I haven't got the memo.

12-31-2011, 09:43 PM	#52
Rattlesnake Guy Senior Member Join Date: Sep 2004 Posts: 1,254 Thanks: 423 Thanked 366 Times in 175 Posts	I don't get it... We seem to be able to make car headlights that look like blue super novas. Why can't we make an energy efficient bulb that mimics the same spectral output as a glowing tungsten filament at about 2900 degrees kelvin. Maybe they do, and I haven't got the memo.