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500 BCE
Hippasus of Metapontum believed to have first discovered the idea of irrational numbers
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460 BCE
Proclus claims that Pythagoras discovered the theory of irrational numbers
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340 BCE
Pappus of Alexandria states that the story of he who discovered irrationality is a story rather than a fact.
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300 BCE
Euclid Proves the square root of 2 is an irrational number in his book The Elements
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300 BCE
Iamblichus proposes alternative accounts to the discovery of irrationality
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Sir Francis Galton coins the term “Eugenics” in his book, Inquiries into Human Faculty and Its Development
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California, the state who carried out the most sterilizations, passes its first sterilization law.
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The Eugenics Record Office (ERO) is created by Charles B. Davenport
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U.S Supreme Court rules in favor of forced sterilizations in Buck vs. Bel
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Under the power of Adolf Hitler, the german government passes the Law of Prevention of Hereditarily Diseased Offspring
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Hermann J. Muller publishes his eugenics book, Out of the Night
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Kurt Von Fritz proposes an alternative method to how Hippasus discovered irrationality which involves the use of a pentagon rather than a triangle
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Indiana becomes the first state to repeal its sterilization law.
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Stephen Hawking publishes his book God Created The Integers: The Mathematical Breakthroughs that Changed History, where he doesn't name who actually discovered irrationality