Walter Baade and Fritz Zwicky invent the concept of the neutron star, a new type of celestial object, suggesting that supernovae might be created by the collapse of a normal star to form a neutron star.
Sir Arthur Eddington publishes The Expanding Universe: Astronomy's 'Great Debate', 1900–1931 in Cambridge.
April 3 – First attempted human kidney transplant, by Dr Yuri Voronoy in the Soviet city of Kherson; the recipient dies 2 days later due to incompatibility of blood type with the (cadaveric) donor.[12][13][14][15]
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^Yan, Ming; Lo, Julian C.; Edwards, Jacob T.; Baran, Phil S. (2016). "Radicals: Reactive Intermediates with Translational Potential". Journal of the American Chemical Society. 138 (39): 12692–12714. doi:10.1021/jacs.6b08856. PMC5054485. PMID 27631602.
^Crilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus. p. 125. ISBN978-1-84724-008-8.
^Champernowne, D. G. (1933). "The construction of decimals normal in the scale of ten". Journal of the London Mathematical Society. 8 (4): 254–260. doi:10.1112/jlms/s1-8.4.254.
^"Professor David Champernowne". The Daily Telegraph. London. 4 September 2000. Retrieved 2011-12-02..
^Haar, Alfred (January 1933). "Der Massbegriff in der Theorie der kontinuierlichen Gruppen". Annals of Mathematics. 2. 34 (1): 147–169. doi:10.2307/1968346. JSTOR 1968346.
^Neyman, Jerzy; Pearson, Egon S. (1933). "On the Problem of the Most Efficient Tests of Statistical Hypotheses". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 231 (694–706): 289–337. Bibcode:1933RSPTA.231..289N. doi:10.1098/rsta.1933.0009. JSTOR 91247.
^Skewes, S. (1933). "On the difference π(x) − Li(x)" (PDF). Journal of the London Mathematical Society. 8: 277–283. doi:10.1112/jlms/s1-8.4.277. Archived from the original (PDF) on 2011-10-01. Retrieved 2011-12-02.
^Matevossian, Edouard; et al. (2009). "Surgeon Yurii Voronoy (1895–1961) – a pioneer in the history of clinical transplantation: in Memoriam at the 75th Anniversary of the First Human Kidney Transplantation". Transplant International. 22 (12). European Society for Organ Transplantation: 1132–1139. doi:10.1111/j.1432-2277.2009.00986.x. ISSN 0934-0874. PMID 19874569. S2CID 12087935.
^Klein, Andrew; et al. (2011). Organ Transplantation: A Clinical Guide. Cambridge University Press. p. 2.
^Humar, Abhinav; et al. (2009). Atlas of Organ Transplantation. Springer. p. 1.
^Smith, Wilson; Andrewes, C. H.; Laidlaw, P. P. (1933). "A virus obtained from influenza patients". The Lancet. 2 (5732): 66–68. doi:10.1016/S0140-6736(00)78541-2.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^"US1900118A Hydraulic variable speed power transmission". Espacenet. 1933-03-07. Retrieved 2023-10-13.
^Lawrence, Williams L. (27 June 1933). "Human-like eye made by engineers to televise images. 'Iconoscope' converts scenes into electrical energy for radio transmission. Fast as a movie camera. Three million tiny photo cells 'memorize', then pass out pictures. Step to home television. Developed in ten years' work by Dr. V.K. Zworykin, who describes it at Chicago". The New York Times. ISBN9780824077822.
^Zworykin, V. K. (September 1933). "The Iconoscope, America's latest television favourite". Wireless World (33): 197. ISBN9780824077822.