The Red Hot Chili Peppers got turned on by the bulb during 1994's Woodstock Music Festival, dawning memorable self-illuminating costumes for their stage show.

You radiate at the same level as a 100-watt light bulb, but it's, of course, distributed over a much larger area, so you're not that hot as a 100-watt light bulb.

A bulb cooled this way should have a dome that's hot to the touch.