Planck Discovers Black Body Radiation: Quantum Physics Begins
Max Planck solved the black-body radiation puzzle by proposing that energy is emitted in discrete packets he called quanta, a radical departure from classical physics. This single insight, worked out at his home in Berlin's Grunewald district, launched the quantum revolution that would transform every branch of physical science within a generation.
October 19, 1900
126 years ago
Key Figures & Places
What Else Happened on October 19
Roman legions under Scipio Africanus crush Hannibal's forces at the Battle of Zama, ending decades of terror across Italy and securing Rome as the undisputed ma…
King Gaiseric led his Vandal forces into Carthage, seizing the city without a fight after years of relentless pressure on Roman North Africa. By capturing this …
Papst Adeodatus I. wird inthronisiert.
King John succumbed to dysentery at Newark-on-Trent, ending a disastrous reign defined by the loss of French territories and the forced signing of the Magna Car…
Die Stadt Siegen erhält das Soester Stadtrecht.
Heidelberg University held its first lecture on October 18, 1386. The Elector Palatine founded it after a theological dispute got his scholars expelled from Par…
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