On Tue, 3 Apr 2007 20:23:53 +0000 (UTC), (Dave
Martindale) wrote:


But so far they're more expensive than other light sources. It's worth
it if you need the ability to change light colour, but they are *less*
efficient than CFL. They're more efficient than incandescent, even
halogen incandescent, and still getting better so they may pass CFL one
day.

LED flashlights, with say 14 leds, are pretty good in total darkness,
just as one AAA cell in a little penlight can do a lot, in total
darkness. Probably even a lot better than the penlight.

But for real light, when there is light in the rest of the room, we
have to wait.

Dave