1909 ⟶ Millikan Determines the Charge of an Electron
Robert Andrews Millikan: conducts the oil drop experiment an...
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🔬 Millikan Determines the Charge of an Electron
Robert Andrews Millikan: conducts the oil drop experiment and determines the charge on an electron⟶
PhysicsAtomic TheoryExperimental PhysicsScientific MethodModern PhysicsQuantum Mechanics
United States🕊️ Martha, the Last Passenger Pigeon, Dies
September 1: Martha, last known passenger pigeon, dies.⟶
ExtinctionEnvironmentalismConservationWildlifeZoology
United States🧪 Willard Libby Begins Radiocarbon Dating Research
Willard Libby began his work on radiocarbon dating. He published his paper in 1946, a second paper in Science in 1947. Libby and James Arnold succeeded with the radiocarbon dating theory after results were published in Science in December 1949.⟶
ArchaeologyPhysicsChemistryHistory
United States⚛️ Antimatter First Synthesized
Antimatter first produced.⟶
PhysicsParticle PhysicsFundamental ParticlesExperimental PhysicsDiscovery
United States⚛️ Wu's Experiment Reveals Parity Violation in Weak Interactions
Chien Shiung Wu: demonstrated that parity, and thus charge conjugation and time-reversals, are violated for weak interactions⟶
PhysicsParticle PhysicsExperimental PhysicsQuantum Mechanics20th Century Science
United States⚛️ First Bose-Einstein Condensate Created
Eric Cornell, Carl Wieman and Wolfgang Ketterle attained the first Bose-Einstein Condensate with atomic gases, so called fifth state of matter at an extremely low temperature.⟶
PhysicsQuantum MechanicsExperimental Physics
United States