Planck's law (preceded by Rayleigh-Jeans law) explained how heating up a black-body to various temperatures causes it to emit varying spectrums of EM radiation.
It's blackbody radiation and the temperature it's at gives off an orange-red color
Planck's law (preceded by Rayleigh-Jeans law) explained how heating up a black-body to various temperatures causes it to emit varying spectrums of EM radiation.
It's blackbody radiation and the temperature it's at gives off an orange-red color