Re: N:Vision CFL's

["Slammer" <mjinks@xxxxxxxxxxxxx>]

"Marc_F_Hult" <MFHult@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:gkcb0393blca8s2qq7faq9u5tgngjoghlk@xxxxxxxxxx
> On Sat, 24 Mar 2007 16:34:09 -0400, "Slammer" <mjinks@xxxxxxxxxxxxx> wrote
> in
> message  <v96dnSh9FJ6JFpjbnZ2dnUVZ_uKknZ2d@xxxxxxxxxxxx>:
>
>>"Marc_F_Hult" <MFHult@xxxxxxxxxxxxxxxxxxxxx> wrote in message >
>>>
>>> The warmup period for the 2700K and 3500K is completely negligible
>>> starting
>>> from room temperature (I previously posted data showing rapid warm-up
>>> starting at 0F (-18C)).
>>>
>>> As the physics would suggest, the 5500K takes longer to warm up.
>>
>>Huh?
>>
>>The color temperature of a light source is determined by comparing its hue
>>with a theoretical, heated black-body radiator. The Kelvin temperature at
>>which the heated black-body radiator matches the hue of the light source
>>is
>>that source's color temperature, and it is directly related to Planck's
>>law
>>of black body  radiation.
>>
>>An incandescent light is very close to being a black-body radiator.
>>However,
>>many other light sources, such as fluorescent lamps, do not emit radiation
>>in the form of a black-body curve, and are assigned what is known as a
>>correlated color  temperature (CCT), which is the color temperature of a
>>black body which most closely matches the lamp's perceived color. Because
>>such an approximation is not required for incandescent light, the CCT for
>>an
>>incandescent light is simply its unadjusted Kelvin
>>value, derived from the comparison to a heated black-body radiator.
>>
>>
>>Michael
>
> Huh huh. Instead of plagiarizing wikipedia, why not cite it?
>
> http://en.wikipedia.org/wiki/Color_temperature
>
> While what you quote without attribution is well and good, as you point
> out,
> it is not the physics involved.
> ...Marc
> Marc_F_Hult
> www.EControl.org

Really? Please explain your physics.

This whole thing is simply unfair. You need either education or medication.