Planck Discovers Black-Body Radiation: The Birth of Quantum Theory
Max Planck derived the law of black-body radiation in his Berlin home, introducing the concept that energy is emitted in discrete packets called quanta. This single equation demolished classical physics' assumption of continuous energy flow and launched the quantum revolution that would reshape science within a generation.
December 7, 1900
126 years ago
Key Figures & Places
What Else Happened on December 7
Soldiers intercepted Marcus Tullius Cicero near his Formia villa, decapitating the orator on orders from Marcus Antonius. By silencing the Republic’s most vocal…
The soldiers found him in his litter, fleeing to the coast. Cicero stuck his head out — told them to get it over with. They cut off his head and both hands. Mar…
Justin II's mind shattered in waves. The seizures came without warning — violent fits where the Byzantine emperor would thrash, scream, rage at phantoms only he…
Byzantine Emperor Justin II, wracked by recurring seizures of insanity, adopted his general Tiberius and proclaimed him Caesar on this day in 574 AD. This sudde…
فتح جلولاء آخر معاقل الفرس إثر معركة كبيرة بينهم وبين المسلمين بقيادة هاشم بن عتبة.
Qarmatian forces crush the Sajid emir Yusuf ibn Abi'l-Saj near Kufa, dragging him into captivity after a decisive defeat. This victory shatters Sajid control ov…
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