Sunday, December 14, 2025

Friday, December 14, 1900. Quantum Mechanics.

Max Planck presented his paper Zur Theorie des Gesetzes der Energieverteilung im Normalspektrum (On the Theory of the Law of Energy Distribution in Normal Spectrum) at a meeting of the German Physical Society in Berlin.

For that reason, today is regarded as the birthday of quantum mechanics.

The 1899 Hague Convention was revised.

Last edition:

Saturday, December 8, 1900. James Roosevelt dies.

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