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Robert McNees
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Sofya Kovalevskaya was born #OTD in 1850. She was the first woman to earn a doctorate in mathematics in modern Europe, be appointed to a university chair, and join the
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Bekenstein was motivated by discussions with his advisor John Wheeler, who was worried about what would happen to the entropy of a hot cup of tea poured into a black
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Stephen Hawking was born #OTD in 1942. He developed theorems with Penrose that determine when general relativity produces singularities, established classical laws of black hole mechanics, and hypothesized that quantum
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Radio engineer, amateur astronomer, and Chicagoan Grote Reber was born #OTD in 1911. After reading about Karl Jansky’s accidental discovery of galactic radio emissions, he built a 9m radio telescope
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Cécile DeWitt-Morette, mathematical physicist who made foundational contributions to the study of Feynman functional integrals, organized the first American conference on general relativity, and founded the Les Houches Summer School,
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Carl Sagan passed away #OTD in 1996. In his final interview he left us with two messages that are still relevant today: one emphasizing the importance of a science literate
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Albert Michelson, pioneer of optical interferometry, was born #OTD in 1852. He refined measurements of the speed of light, failed to find evidence of the aether, and developed a method
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J.J. Thomson was born #OTD in 1856. He discovered the electron, developed experimental techniques that led to mass spectroscopy, trained physicists like Rutherford and Bohr, but was ~betrayed~ by his
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Sister Mary Kenneth Keller was born #OTD in 1913. She designed Beginner’s All Purpose Symbolic Instruction Code — BASIC — with John G. Kemeny and Thomas E. Kurtz, and was
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Émilie du Châtelet, who hypothesized conservation of energy, established kinetic energy as distinct from momentum and proportional to (speed)², and combined Newton, Leibniz, and her own original ideas in "Institutions
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Physicist Freeman Dyson was born #OTD in 1923. He was known for his work in quantum electrodynamics and –– among many other things –– his eschatological musings about physics and
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Physicist Max Born was...born... #OTD in 1882. In 1926 he formulated a rule for the statistical likelihood of a measurement on a quantum system yielding a particular outcome. Born’s rule
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