Why hot matter will effect cold matters when they meet each other’s?
But short wavelength electromagnetic radiation (like gamma ray) and long wavelength electromagnetic radiation (like radio waves) won’t effect each other’s much when they meet each other’s
Matter has mass. Mass can absorb heat energy. (Your hot matter would give up some of its heat energy to the cold matter.) Electromagnetic waves do not have mass.
I think it has more to do with the atoms in the matter. When atoms are heated, they get excited and if too excited, compounds within a solid substance might break apart and cause the substance to melt
Answers & Comments
Matter has mass. Mass can absorb heat energy. (Your hot matter would give up some of its heat energy to the cold matter.) Electromagnetic waves do not have mass.
I think it has more to do with the atoms in the matter. When atoms are heated, they get excited and if too excited, compounds within a solid substance might break apart and cause the substance to melt