this post was submitted on 17 Dec 2024
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Showerthoughts

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When describing color temperatures, the "warm" color tones actually have colder temperatures. (self.showerthoughts)
submitted 1 week ago by chrizzly to c/showerthoughts@lemmy.world
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So lets say if you compare the color temperatures of 2500 K vs 5000 K, the 2500 K would have more red light and usually is described as "warm" light, even though it is called a lower temperature at the same time.

(Yeah I know the color temperatures in Kelvin have smth to do with black body radiation, but I wonder if the red light = warm and blue light = cold has some evolutionary background or that blue light has been discovered wayyyy later (blue LEDs etc.).)

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[–] criitz@reddthat.com 13 points 1 week ago (2 children)

Heres a good minutephysics video on this topic: https://youtu.be/mqZm6u12RJA

[–] Ephera@lemmy.ml 7 points 1 week ago

TL;DW: Most lights used to be hot glowy things, e.g. fire, light bulbs or the sun. Those start glowing red hot at relatively low temperatures and become white hot at high temperatures. That's where the inverse scale comes from.

[–] chrizzly 3 points 1 week ago

Uh, didnt know minutephysics had a video on this, thanks for sharing!