From what I understand, ultraviolet catastrophe means that at that time scientists believed that for energy to be higher the frequency should be higher. But frequency is higher in case of ultraviolet light but ultraviolet light has less heat.
Does this mean that even though ultraviolet light is having greater frequency it has less energy?
Also since violet color has most energy ultraviolet light has less energy than violet even though ultraviolet is more hotter than normal heat?
Best Answer
The idea is related to thermal equilibrium of a black body. The classical theory predicts that this type of bodyy will emit light on all frequencies, with energy density increasing with frequency $B_\nu \sim\nu^2$.
And you can actually see this is not case (hence the catastrophe part), a furnace is a good example of a black body, the classical model will conclude that there'll be light with an arbitrarily high energy density coming out of the furnace, which is not observed in reality