" == Incandescent == I have a question about the following statement made in this article. ""The power of a lightbulb (20 or 100 W) seems to change its color but in reality it only affects its luminosity (luminance) to which our eyes are very sensitive."" Is there a reference for this? This doesn't seem to agree with a statement in the Incandescent Light Bulb entry (see quote below), which infers that color temperature of tungsten lighting is variable. ""The current heats the filament to an extremely high temperature (typically 2000K to 3300K depending on the filament type, shape, size, and amount of current passed through). Heated atoms within the filament intensely vibrate. The electrons, which are charged particles
" == Incandescent == I have a question about the following statement made in this article. ""The power of a lightbulb (20 or 100 W) seems to change its color but in reality it only affects its luminosity (luminance) to which our eyes are very sensitive."" Is there a reference for this? This doesn't seem to agree with a statement in the Incandescent Light Bulb entry (see quote below), which infers that color temperature of tungsten lighting is variable. ""The current heats the filament to an extremely high temperature (typically 2000K to 3300K depending on the filament type, shape, size, and amount of current passed through). Heated atoms within the filament intensely vibrate. The electrons, which are charged particles,