Here's a chart (with pictures, yet) showing some actual measurements of
various types of lighting.

http://www.mge.com/home/appliances/l...comparison.htm

"Josepi" wrote:

LEDs are still reported to only be slightly more efficient than incandescent
bulbs. On top of all that the more efficient ***white*** LED bulbs are made
with phospours, similiar to CFL bulbs. I beleive the mercury is not there as
the electrical energy is converted, the first time, by LED technology.