dec 24, 1900 - German physicist Max Planck
Description:
suggests, while describing his law of black body radiation, that light may be emitted in discrete frequencies or “quanta”, and establishes the value of the Planck constant to describe the sizes of these quanta. This is often regarded as marking the birth of quantum physics.Added to timeline:
Date:
dec 24, 1900
Now
~ 125 years ago