December 14, 2014 at 12:12PM
Isn't it strange referring to blue light as the "cooler" light when its color temperature is hotter than red light, which we ironically call the "hotter" light?
Although the color temperature is not the operating temperature of light, it does have a positive correlation with heat.
So, a bluer light is actually hotter and thus has a higher kelvin value than a redder light, which has a lower kelvin temperature value, and also thus produces lesser heat, and must be cooler than the blue one.
However, we call them the opposite names. We call a blue light a cooler light and a redder light, we call the warmer light. Why is that?