List of years in science (table)
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The year 1925 in science and technology involved some significant events, listed below.

Astronomy and space science

  • January 1 – Cecilia Payne completes her PhD thesis Stellar Atmospheres: a Contribution to the Observational Study of High Temperature in the Reversing Layers of Stars[1] at Radcliffe College of Harvard University, providing spectral evidence that stars are composed almost entirely of hydrogen with helium, contrary to scientific consensus at the time; however, her findings will be vindicated by 1929 and astronomer Otto Struve will describe her work as "the most brilliant PhD thesis ever written in astronomy".[2]

Biology

Cartography

Chemistry

History of science

Physics

Technology

Other events

Awards

Births

Deaths

References

  1. Payne, Cecilia H. (1925). Stellar Atmospheres: a Contribution to the Observational Study of High Temperature in the Reversing Layers of Stars (PhD). Radcliffe College. Bibcode:1925PhDT.........1P. OCLC 1443459. ProQuest 301786588.
  2. "January 1, 1925: Cecilia Payne-Gaposchkin and the Day the Universe Changed". American Physical Society. January 2015. Retrieved 2021-04-01.
  3. Fenna, Donald (2006), Cartographic Science: A Compendium of Map Projections, with Derivations, Boca Raton: CRC Press, p. 357, ISBN 9780849381690.
  4. Emsley, John (2001). "Rhenium". Nature's Building Blocks: An A-Z Guide to the Elements. Oxford University Press. pp. 358–360. ISBN 0-19-850340-7.
  5. Simcock, A. V., ed. (1985). Robert T. Gunther and the Old Ashmolean. Oxford: Museum of the History of Science. ISBN 0-903364-04-2.
  6. "This Month in Physics History – January 1925: Wolfgang Pauli announces the exclusion principle". APS News. American Physical Society. 16 (1). January 2007. Retrieved 2011-06-25.
  7. Rovelli, Carlo (2020). Helgoland.
  8. Burns, R. W. Television: An International History of the Formative Years. London: Institution of Electrical Engineers. p. 264. ISBN 9780852969144.
  9. U.S. Patent 1,745,175 Method and apparatus for controlling electric currents, first filed in Canada, describing a device similar to a MESFET. Granted 28 January 1930. Lee, Thomas H. (2004). The Design of CMOS Radio-Frequency Integrated Circuits (New ed.). Cambridge University Press. pp. 167ff. ISBN 9780521835398.
  10. "Foot-Measuring Instrument." U.S. Patent 1,682,366.
  11. Fangerau, H. M. (2006). "The novel Arrowsmith, Paul de Kruif (1890-1971) and Jacques Loeb (1859–1924): a literary portrait of "medical science"". Medical Humanities. 32 (2): 82–87. doi:10.1136/jmh.2006.000230. PMID 23673799.
  12. "Seymour R. Cray - American engineer". Encyclopedia Britannica. Retrieved 21 February 2018.
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