The qunatisation of energy is related to Planck’s quantum theory.
Planck’s quantum theory
According to Planck’s theory
- Different atoms and molecules can emit or absorb energy in discrete quantities only. The smallest amount of energy that can be emitted or absorbed in the form of electromagnetic radiation is known as quantum.
- The energy of the radiation absorbed or emitted is directly proportional to the frequency of the radiation.
The energy of radiation is expressed in terms of frequency as,
E = h ν
E = Energy of the radiation
h = Planck’s constant (6.626×10–34 J.s)
ν= Frequency of radiation