On Sat, 15 Oct 2011 09:58:38 -0700, "William Sommerwerck"
wrote:

"White" LEDs are actually blue LEDs with a phosphor that glows yellow under
blue light. The eyes sees blue + yellow = white.

Their spectrum is anything but continuous -- or even peaked at the right
points -- so it's highly unlikely to work.

Most white LEDs are phosphor-based but hardy as bi-chromatic as you make
them sound. The little Cree in my pocket flashlight has the typical
broad peak around 450 nm and valley around 485 but it's quite continuous
down to 650, tailing off at about 670. Very different from the narrow,
discrete lines from a CCFL.

--
Rich Webb Norfolk, VA