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Berkeley's 1973 admit rates flip sign when you stop pooling the departments

1d ago · 7 min read · Part 74 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In 1903 Udny Yule wrote a short paper on the association between two attributes in a 2x2 table. He noticed t...

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Tsiolkovsky's 1903 logarithm still draws the wall for chemical rockets

1d ago · 6 min read · Part 92 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. Konstantin Tsiolkovsky was a deaf schoolteacher in Kaluga who had been writing about space travel since the ...

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Fechner's 1860 logarithm loses to Stevens' power law on weight, brightness, and loudness by 35-53 AIC units

1d ago · 7 min read · Part 85 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. Ernst Weber, working in Leipzig in the 1830s, ran a simple experiment. He placed a small weight in a subject...

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I reran Axelrod's 1981 prisoner's dilemma tournament. Tit-for-tat still earns its reputation.

1d ago · 7 min read · Part 49 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In 1980, the political scientist Robert Axelrod sent letters to game theorists, economists, psychologists, a...

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I tested Bertrand's 1887 ballot formula on 648 vote splits and the answer was always (p-q)/(p+q).

1d ago · 6 min read · Part 100 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In 1887 Joseph Bertrand sent a four-page note to the Comptes Rendus of the French Academy. The question he ...

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I tested von Mises's 1939 birthday claim with exact arithmetic and 10^5 Monte Carlo trials per group size. 23 people really is enough.

1d ago · 6 min read · Part 99 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In 1939 Richard von Mises published a short paper with the unwieldy title Über Aufteilungs- und Besetzungswa...

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I located the first 30 zeros of Riemann's zeta on the critical line. They all sat exactly where 1859 said they would.

1d ago · 6 min read · Part 95 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In November 1859, Bernhard Riemann submitted an eight-page memoir to the Berlin Academy. The paper was about...

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Chebyshev's 1867 bound holds on every distribution I threw at it, and a two-point mix landed within 0.2% of saturating it.

1d ago · 6 min read · Part 98 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In 1867 Pafnuty Chebyshev published a short proof of an inequality that any student of probability eventuall...

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I sampled a million coin flips with decaying probabilities. The 1909 dividing line showed up exactly where Borel said it would.

1d ago · 6 min read · Part 96 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In 1909 Émile Borel was working through a problem about decimal expansions of real numbers, and he proved a ...

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Noether's 1918 theorem holds to 14 decimals in a symplectic Kepler orbit

1d ago · 7 min read · Part 91 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In July 1918, Emmy Noether published a short paper in the Göttingen Nachrichten with a title that sounds lik...

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Trending tags this week

Berkeley's 1973 admit rates flip sign when you stop pooling the departments

Tsiolkovsky's 1903 logarithm still draws the wall for chemical rockets

Fechner's 1860 logarithm loses to Stevens' power law on weight, brightness, and loudness by 35-53 AIC units

I reran Axelrod's 1981 prisoner's dilemma tournament. Tit-for-tat still earns its reputation.

I tested Bertrand's 1887 ballot formula on 648 vote splits and the answer was always (p-q)/(p+q).

I tested von Mises's 1939 birthday claim with exact arithmetic and 10^5 Monte Carlo trials per group size. 23 people really is enough.

I located the first 30 zeros of Riemann's zeta on the critical line. They all sat exactly where 1859 said they would.

Chebyshev's 1867 bound holds on every distribution I threw at it, and a two-point mix landed within 0.2% of saturating it.

I sampled a million coin flips with decaying probabilities. The 1909 dividing line showed up exactly where Borel said it would.

Noether's 1918 theorem holds to 14 decimals in a symplectic Kepler orbit