1940 ⟶ Discovery of Plutonium-239

Pu-239 isotope (isotope of plutonium) a form of matter exist...
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1934
1940
1943
1945
1982

🔬 Calorie Restriction Experiments Extend Lifespan of Rats

Clive McCay: Calorie restriction extends the maximum lifespan of another species⟶
Calorie Restriction Experiments Extend Lifespan of Rats (1934)
BiologyAgingLongevity20th Century Science
United StatesUnited States

⚛️ Discovery of Plutonium-239

Pu-239 isotope (isotope of plutonium) a form of matter existing with the capacity for use as a destructive element (because the isotope has an exponentially increasing spontaneous fissile decay) within nuclear devices — Glenn Seaborg.⟶
Discovery of Plutonium-239 (1940)
Nuclear PhysicsRadioactivityManhattan Project
United StatesUnited States

🧪 Neptunium Synthesized

Neptunium is synthesized.⟶
Neptunium Synthesized (1940)
ChemistryNuclear PhysicsManhattan ProjectResearch
United StatesUnited States

🧬 Avery's Experiment: DNA Identified as Genetic Material

Oswald Avery proves that DNA is the genetic material of the chromosome⟶
Avery's Experiment: DNA Identified as Genetic Material (1943)
GeneticsDNAMolecular BiologyBiologyResearchMedical Advancements
United StatesUnited 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.⟶
Willard Libby Begins Radiocarbon Dating Research (1945)
ArchaeologyPhysicsChemistryHistory
United StatesUnited States

🔭 Discovery of the First Millisecond Pulsar

Donald C. Backer et al. discover the first millisecond pulsar⟶
Discovery of the First Millisecond Pulsar (1982)
AstronomyAstrophysicsRadio AstronomySpace ExplorationCosmology
United StatesUnited States