Adrian C wrote:
Martin Angove wrote:

Have you ever *seen* the light from a discharge lamp? Ignoring the
problem of UV exposure (they produce gallons of the stuff) they have to
be the brightest source I've seen, Watt for Watt.

Hwyl!

M.

Just thinking. Do white LED's yet come anywhere close (even in an array?)

---
Adrian

I did think of white LEDs as you can get extremely bright ones (used
mostly on the tips of plane wings I believe) but they are even more
expensive than the real thing and also don't last that long. A large
(maybe even huge) array of small white LED's might work but I am not
sure it would be that cost effective as they fail fairly quickly if they
get hot. I think the cheapest solution is short florescent tubes. I
could probably pack quite a few into a small area. Another possibility
is just powering up the cheapest projector bulb money can buy. I haven't
really decided because until I know how to get the projector to come on
without a bulb in place the whole things a bit moot.

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