1924 in science
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Astronomy and space exploration
- November 23 – Edwin Hubble announces his discovery that Andromeda, previously believed to be a nebula, is actually another galaxy, and that the Milky Way is only one of many such galaxies in the universe.
- The Einstein Tower near Potsdam, Germany, designed by Erich Mendelsohn, becomes operational as an astrophysical observatory.
- Mount Stromlo Observatory near Canberra, Australia, is established as the Commonwealth Solar Observatory.
- 1056 Azalea is discovered.
- The term "ectogenesis" is coined by British scientist J.B.S. Haldane to describe the growth of mammalian embryos in artificial environments.
History of science and technology
- December 17 – Dismantling of James Watt's workshop for display in the Science Museum, London, commences.
- Stefan Banach and Alfred Tarski publish the Banach–Tarski paradox.
- David Hilbert proposes Hilbert's paradox of the Grand Hotel.
- The first specimen of Australopithecus africanus, the fossil skull of the "Taung Child", is identified in South Africa.
- 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.
- 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.
- Louis de Broglie introduces the wave-model of atomic structure, based on the ideas of wave–particle duality.
- End – Wolfgang Pauli first proposes his exclusion rule in a letter.
- February 5 – Hourly time signals from Royal Greenwich Observatory are broadcast for the first time.
- February – John Logie Baird sends rudimentary television pictures over a short distance.
- Václav Holek designs the ZB vz. 26 light machine gun for Zbrojovka Brno.
- The earth inductor compass is developed by Morris Titterington at the Pioneer Instrument Company in Brooklyn, New York.
- February 21 – Thelma Estrin (died 2014), American computer scientist and biomedical engineer
- March 11 – Franco Basaglia (died 1980), Italian psychiatrist
- March 23 – Bjørn G. Andersen (died 2012), Norwegian quaternary geologist and glaciologist (early environmental studies)
- June 24 – James W. Black (died 2010), Scottish pharmacologist (Nobel Prize in Physiology or Medicine, 1988)
- August 1 – John Clive Ward (died 2000), English-born physicist working in quantum electrodynamics
- September 22 – Laurel van der Wal (died 2009), American aeronautical engineer
- November 9 – Don Beaven (died 2009), New Zealand medical researcher in the area of diabetes treatment and prevention
- November 20 – Benoît Mandelbrot (died 2010), Polish-born French American mathematician, originator of fractal geometry
- December 30 – Yvonne Brill (died 2013), Canadian scientist best known for her work developing rocket and jet propulsion technologies
- February 11 – Jacques Loeb, German-born physiologist (born 1859)
- March 22 – Sir William Macewen, Scottish surgeon (born 1848)
- April 4 – Arnold Pick, Czech neurologist (born 1851)
- April 24 – G. Stanley Hall, American psychologist (born 1844)
- September 24 – Alexandre Lacassagne, French forensic scientist (born 1843)
- October 1 – John Edward Campbell, British mathematician (born 1862)
- In The New York Times. Sharov, Aleksandr Sergeevich; Novikov, Igor Dmitrievich (1993). Edwin Hubble, the discoverer of the big bang universe. Cambridge University Press. p. 34. ISBN 978-0-521-41617-7. Retrieved 2011-12-31. Formally published December 30 and presented as a paper at the January 1, 1925 meeting of the American Astronomical Society. Bartusiak, Marcia (2010). The Day We Found the Universe. Random House. pp. x–xi.
- "Artificial Wombs Are Coming, but the Controversy Is Already Here". Motherboard. 4 August 2014. Retrieved 16 November 2014.
- Centers for Disease Control and Prevention (2011). "Tetanus". Epidemiology and Prevention of Vaccine-Preventable Diseases (pdf). Washington, D.C.: Public Health Foundation. ISBN 0-01-706609-3. Retrieved 2012-07-07.
- Russell, Ben (2014). James Watt: making the world anew. London: Reaktion Books. ISBN 978-1-78023-375-8.
- Banach, Stefan; Tarski, Alfred (1924). "Sur la décomposition des ensembles de points en parties respectivement congruentes" (PDF). Fundamenta Mathematicae. 6: 244–277.
- Gamow, George (1947). One Two Three ... Infinity. New York: Viking Press. p. 17.
- Haas, L. F. (2003). "Hans Berger (1873-1941), Richard Caton (1842-1926) and electroencephalography". Journal of Neurology, Neurosurgery & Psychiatry. 74 (1): 9. doi:10.1136/jnnp.74.1.9. PMC . PMID 12486257.
- Dart, Raymond A. (February 1925). "Australopithecus africanus: The Man-Ape of South Africa" (PDF). Nature. 115: 195–99. Bibcode:1925Natur.115..195D. doi:10.1038/115195a0.
- Stoner, E. C. (1924). "The distribution of electrons among atomic levels". Philosophical Magazine. 6th ser. 48: 719–736. doi:10.1080/14786442408634535.
- "Louis de Broglie: The Nobel Prize in Physics 1929". Nobel Lectures, Physics 1922–1941. Elsevier. 1965. Retrieved 2007-02-28.
- "Landmark Dates". British TV History. Archived from the original on 1 November 2010. Retrieved 2010-10-12.