In message , Adrian C
writes
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?)

It would probably cost more than a new bulb to get sufficient output

Also, the spectral distribution would be different and the colours might
be a bit strange

--
geoff