I know this is been asked on this site before but I felt unsatisfied by its one answer.
I’m familiar with the concept of quantisation, I keep reading that “energy is quantised” but what do they mean by energy? I know that light is quantised along with radiation but is it just those things?
To me, energy means lots of things, there are lots of different kinds of energy. Is electricity quantised, thermal energy, physical force? I read that kinetic energy is not quantised along with some forms of light.
People say that everything is made of energy, does that mean there’s some basic form of energy and if that’s quantised then isn’t everything quantised?
And if they only mean certain kinds of energy, why don’t they say that? You have to admit it’s misleading.