Planck’s constant
Answer Text: Planck’s constant-When a bunch of oscillating atoms and the energy of each oscillating atom is quantified i.e. it could only take discrete values. Max Planck’spredicted the energy of an oscillating atom to be E = n h f, where n – integer, f– frequency of the source, h – Planck’s constant which has a value of #6.63 × 10^-34# Js.