1940 in science
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| List of years in science (Table) |
|---|
| … 1930 • 1931 • 1932 • 1933 • 1934 • 1935 • 1936 • 1937 • 1938 • 1939 – 1940 – 1941 • 1942 • 1943 • 1944 • 1945 • 1946 • 1947 • 1948 • 1949 • 1950 … |
| Related time period or subjects |
| … 1937 • 1938 • 1939 – 1940 – 1941 • 1942 • 1943 … … 1910s • 1920s • 1930s – 1940s – 1950s • 1960s • 1970s … … 19th century – 20th century – 21st century … |
| Art Archaeology Architecture Literature Music Science more |
The year 1940 in science and technology involved some significant events, listed below.
Contents |
[edit] Biology
- February 2 - The first transposons are discovered in maize (Zea mays, aka corn) by Barbara McClintock.
[edit] Computer science
- February 2 - The Complex Number Calculator, a calculator for complex arithmetic based on relays, was completed. (see History of computing hardware).
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[edit] Chemistry
- February 27 - The radioactive isotope carbon-14 is discovered by Martin Kamen and Sam Ruben
- Astatine synthesized by Corson, MacKenzie, and Segre
- Neptunium, the first transuranic element, synthesized by McMillan and Abelson
[edit] Physics
- January 5 - FM radio demonstrated to the FCC for the first time
- Cavity Magnetron invented by John Randall and Harry Boot
