Just the results: [ Ссылка ]
The colors given off by a "black body" like a piece of iron are well known, ranging from dull red through orange and yellow, to bright white. We know that specific colors correspond to specific temperatures, and this knowledge has been used by blacksmiths for centuries.
It works great by eye. But problems occur when you try to translate this to images or video of hot objects. If the image is exposed for the entire scene (as it usually is) then small hot regions that glow a little can seem to be several hundred degrees hotter than they actually are. It can even look like steel is melting when it's really just orange hot - the temperature of an ordinary fire.
Metabunk discussion: [ Ссылка ]
Color/Temperature chart: [ Ссылка ]
