This day in history

Max Planck's Quantum Theory is Born (1900)

Considered the inventor of quantum theory, Max Planck shocked the science world by showing that atoms emit or absorb energy in bundles, or quanta, not in a continuous stream as taught by Newtonian physics. This insight, along with subsequent developments by Einstein, Bohr, and others, established the revolutionary quantum theory of modern physics and earned Planck the 1918 Nobel Prize in Physics. In 1945, Planck's son was executed following a failed attempt to assassinate what political figure?