In message , Bill in Co
writes:
J. P. Gilliver (John) wrote:
In message , Bill in Co
writes:
[]
I can't remember now. I'm still trying to recall which filaments worked
best in our incandescent light bulbs, but Edison left the workroom.


Wolfram ones turned out best. (-: (Though even those are being made
obsolete by the next version: they're getting hard to find here [UK]
now, like Windows 7 is!)

By Job, I think you're right! :-)

Over here, they are phasing out 100W incandescents (and I imagine 60W will
follow soon).

Here, they for some strange reason did the "pearl" ones first (diffused
glass - i. e. you could still get the clear ones for a while).

The CFLs have come down in price, and aren't too bad (and are certainly more
energy efficient, of course). But one thing annoying about them is their
start-up or warm-up time. But such is progress...

That (the start-up time) does improve as technology progresses (though
remains). Here, CFLs got so cheap that they were (literally) giving them
away - but now they're the only widely-available option, they've shot
back up again, especially if you want anything other than the standard,
such as a spotlight bulb.

For more or less instant startup, and I think even better efficiency,
LED are best - but still cost a lot. (Presumably at least partly because
they know they'll not sell many as they last ages too.)
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

Nunc Tutus Exitus Computarus (It is now safe to turn off your computer).