30 May
2010
30 May
'10
5:19 p.m.
On 30/05/2010 20:21, Tony Duell wrote:
Maybe I've been lucky but the short striplight tube I have over mine
doesn't seem too bad. Maybe the phosphor is unusual, though.
Well I've
pretty much used CFLs here for a few years now, they last
longer (if correctly used), generate less heat, which is deffo an
advantage for the anglepoise that I use for close work :)
Oh so have I, I actually prefer them for most applciations. That is, in
all but 4 locations...
1) Over my lathe (the stroboscopic effect does seem to be noticeable) 2) In the darkroom (the CFLs have a long enouhg
afterglow to fog film
after being turned off for quite some time)
Agreed. I bought a few "daylight" incandescents (the ones with the blue
coating) shortly before they became unobtanium.
3) In the copying stand (the light spectrum from a CFL
is useless for
colour photography)
You can now get pretty good daylight ones, and in fact you can get
lighting kits that use them because they produce much less heat for the
same light output as umpteen hundred watts of incandescents. But
ordinary domestic bulbs have a pretty awful spectral output, and
different brands have different characteristics. The proper daylight
ones are seriously more expensive than ordinary domestic ones.
4) As ballast resistors (you don't seriously think
a CFL will work there,
do oyu?)
Not much chance !
--
Pete Peter Turnbull
Network Manager
University of York