Max Planck was a German theoretical physicist, who made significant contributions. He changed our understanding of physics when he discovered that hot objects do not radiate a smooth, continues range of energies as was earlier believed.
Instead, he found that the energies radiated by hot objects have distinct values. His discovery was the beginning of the Quantum theory an entirely new type of physics that revolutionized our understanding of atomic and subatomic processes. In fact, we can say that the quantum theory grew from the ideas of Max Planck.
A quantum is the smallest possible amount of energy. Planck’s constant a fixed number is used to calculate the energy of quanta. The theory has been developed to explain the behavior of particles and the energy they emit. Planck was awarded the Nobel Prize for physics in 1918.