[Boatanchors] CFLs

[J. Forster]

> has anyone, and I haven't read ALL the threads, addressed degrees Kelvin
> and color temperature with the lamps?

Color temperature is only meaningful for Black Body (Plankian) emitters.
It is meaningless for sources with line spectra, like CFLs.

-John

===========

> 2600 degrees K is more like sunset light... lots of yellows and reds.
> 5000 degrees K is more like hot sunlight... more white and less yellows
> and reds.
> Actually HOT over head sun gets as high as 15,000 degrees K.
> By the way.... WHITE in light is the "presence of all colors".  The
> whiter it is, the wider the freq spectrum and balanced spectrum.
>
> More trivia or interesting "stuff":
> Food prepared in a kitchen with 2600 to 3600 degrees K is "more pleasant
> to the eye"... hence, candle light dinners are more romantic.
> Food prepared under 5000 degrees K (daylight) isn't as pleasant and
> doesn't taste as good...  (psychological):-)
>
> Most people don't even realize the differences UNTIL they see the lamps
> side by side.
> Then the 3200 degree K lamp turns red/yellow next to the daylight 5000
> degree K lamp.
>
> My pet peeve is that they do NOT print the degrees K on the lamp boxes
> sometimes.  AND then they like to attach names to them like daylight and
> soft white.
> I get the daylight, but what is soft white?  Soft white to one
> manufacturer is probably one thing and different to another.
>
> Due to your CFL email threads, just seeing bunches of them, I realized
> that I could not see the rigs on my work bench as good as I needed.
> I've kept an LED flashlight there to look at parts closer, etc. :-)
> So when I found some OLD work lights in the garage, that used screw in
> incandescent lamps,  I got an idea.  I got two 75 watt (apparent light)
> daylight CFL's and replaced the old fashion yellow/red bulbs.
> I clamped the two worklights onto my test eqpt shelf right above the
> gear.  BOY... I can see now.  Well, except for a bit of a glare...so I
> have repositioned the fixtures a bit...
> But you guys gave me the idea...  THANKS GUYS....
>
> Wonder why my old brain didn't figure that out earlier...  hee hee.
> HNY......
> Bob Hardie  W5UQ
> retired and having fun
>
> and the beat goes onnnnnn!
> W5UQ.com
> A25UQ, V31UQ&  VP2EEU
> QRZ.com is accurate for all.
>
>
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