Mission Statement
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For those of you who are
technically inclined
If a true black object is
heated,
the color
shifts from a beginning red glow to orange, yellow, white and
eventually a bluish white. The exact color of this light is
called "black
body radiation" typically measured in degrees Kelvin. A tungsten
light comes very close to being a pure black body while fluorescent
lights
are often very green and flashes are often magenta.
The D class of illuminants specify energy distributions that simulate the radiation emitted by a so-called black-body. As the tempertature of a black body increases there is a shift in the emitted radiation to shorter wavelengths. A specific D illuminant is notated with reference to the temperature (in Kelvin) of the black-body which it most closely resembles. The illuminant D65 has a spectral energy distribution that closely matches that of a black-body at 6500K. To get a color to appear white, to the human eye you need to get several parameters to correct to correspond to the three types of color sensors in the eye.
Born on: December 26, 2003
The D class of illuminants specify energy distributions that simulate the radiation emitted by a so-called black-body. As the tempertature of a black body increases there is a shift in the emitted radiation to shorter wavelengths. A specific D illuminant is notated with reference to the temperature (in Kelvin) of the black-body which it most closely resembles. The illuminant D65 has a spectral energy distribution that closely matches that of a black-body at 6500K. To get a color to appear white, to the human eye you need to get several parameters to correct to correspond to the three types of color sensors in the eye.
Born on: December 26, 2003