Brian Gaff wrote

As an aside. If these are thre colour, and the idea is to make white from
red blue and green, and tvs use red blue and green to make white, then the
actual colour of the colours of rg and b used must be way off on the
lamps.
When we used to make TVs in this fair land from scratch, we had a standard
white light made from yes a fl tube with calibrated colour. That was back
in the 70s so I just do not get it, all I can think is that the perceived
efficiency is greater using this stuff.

Yeah, I bet that’s it when they do care about the efficiency.

"Arfa Daily" wrote in message
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"Brian Gaff" wrote in message
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Why is it that when one wants cfls, one is forced to have the weird
light output that many find hazy and hard to see in? I'd have thought
that the really white phosphoreds would add very little to the cost and
be much better for lighting purposes, or is the cream/green/yellow
fuzzy one very much more efficient or something?
It even makes my eyes feel tired even though I cannot see in it.

Brian

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From the sofa of Brian Gaff -

Blind user, so no pictures please!


I really don't know what it is about CFLs over linear flourescents. I
have absolutely no problem whatsoever seeing under incandescents or
linears of any colour persuasion, neither do I find their light
objectionable in any way. However, I hate the sickly light that CFLs
generate, and have great trouble reading under them. None of them of any
colour temperature or CRI seem to suit me. About the only thing that I
can say is that they use a tricolour phosphor mix, and this produces a
highly discontinuous spectrum compared to daylight or incandescent light,
but then the spectrum from linear flourescents isn't very clever, either.

Lots of people will now jump on the thread and say that they can't see
anything at all wrong with CFLs, and that the light from them is perfect
etc etc. Maybe this is true for them, and I'm sure most people, but it is
not for me, and apparently Brian. I do have a degree of colour blindness,
and maybe it's this, combined with the 'holey' spectrum, that combines to
make their light objectionable to me.

On a more practical level, I tried putting one in my bench light a while
back. Unfortunately, it was worse than useless for what I do (electronic
service work), as the discontinuous spectrum played havoc with being able
to correctly identify resistor colour code bands. Orange was barely
distinguishable from brown and sometimes red, and blue, green and grey
were also a problem with some resistor types. I have no such problems
working under incandescent light.

Arfa