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Science on the 30th of November 1923 in history

Science
Date Text
30 Nov 1923 ectogenesis
ectogenesis

 ectogenesis (biology)
The term "ectogenesis" is coined by British scientist J.B.S. Haldane to describe the growth of mammalian embryos in artificial environments.
0
30 Nov 1923 tetanus toxoid
tetanus toxoid

 tetanus toxoid (biochemistry)
The first inactive tetanus toxoid is discovered and produced.
0
30 Nov 1923 David Hilbert
David Hilbert

 David Hilbert (mathematics)
David Hilbert proposes Hilbert's paradox of the Grand Hotel.
0
30 Nov 1923 S. N. Bose
S. N. Bose

 S. N. Bose (physics)
S. N. Bose and Albert Einstein publish papers in Zeitschrift für Physik applying Bose–Einstein statistics to light quanta and to atomic models and predicting existence of the Bose–Einstein condensate.
0
30 Nov 1923 E. C. Stoner
E. C. Stoner

 E. C. Stoner (physics)
E. C. Stoner publishes a paper pointing out that for a given value of the principal quantum number (n), the number of energy levels of a single electron in the alkali metal spectra in an external magnetic field, where all degenerate energy levels are separated, is equal to the number of electrons in the closed shell of the rare gases for the same value of n. This leads to discovery of the Pauli exclusion principle.
0
30 Nov 1923 Louis de Broglie
Louis de Broglie

 Louis de Broglie (physics)
Louis de Broglie introduces the wave-model of atomic structure, based on the ideas of wave-particle duality.
0
30 Nov 1923 Václav Holek
Václav Holek

 Václav Holek (technology)
Václav Holek designs the ZB vz. 26 light machine gun for Zbrojovka Brno.
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29th November 1923 1st December 1923
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