1940 In Science

Information about 1940 In Science

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 ^.

The year 1940 in science and technology involved some significant events, listed below.

Biology

February 2 - The first transposons are discovered in maize (Zea mays, aka corn) by Barbara McClintock.

Computer science

February 2 - The Complex Number Calculator, a calculator for complex arithmetic based on relays, was completed. (see History of computing hardware).

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

Physics

January 5 - FM radio demonstrated to the FCC for the first time
Cavity Magnetron invented by John Randall and Harry Boot

Births

November 26 - Enrico Bombieri, mathematician

Deaths

The following entries cover events related to science or technology which occurred in the listed year.

1500s - 1600s - 1700s - 1800s - 1900s - 2000s

1500s

1500 1501 1502 1503 1504 1505 1506 1507 1508 1509
1510 1511 1512 1513 1514 1515 1516 1517 1518 1519
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The table of years in science is a tabular display of all years in science, for overview and quick navigation to any year.

::Contents: 2000s - 1900s - 1800s - 1700s - 1600s - 1500s - 1400s

2000s in science

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-1930- 1931 ^. 1932 ^. 1933 1934 ^. 1935 ^. 1936 ^. 1937 ^. 1938 ^. 1939 ^.
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-1931- 1932 ^. 1933 ^. 1934 1935 ^. 1936 ^. 1937 ^. 1938 ^. 1939 ^. 1940 ^.
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-1932- 1933 ^. 1934 ^. 1935 1936 ^. 1937 ^. 1938 ^. 1939 ^. 1940 ^. 1941 ^.
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-1933- 1934 ^. 1935 ^. 1936 1937 ^. 1938 ^. 1939 ^. 1940 ^. 1941 ^. 1942 ^.
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-1934- 1935 ^. 1936 ^. 1937 1938 ^. 1939 ^. 1940 ^. 1941 ^. 1942 ^. 1943 ^.
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-1935- 1936 ^. 1937 ^. 1938 1939 ^. 1940 ^. 1941 ^. 1942 ^. 1943 ^. 1944 ^.
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-1936- 1937 ^. 1938 ^. 1939 1940 ^. 1941 ^. 1942 ^. 1943 ^. 1944 ^. 1945 ^.
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-1937- 1938 ^. 1939 ^. 1940 1941 ^. 1942 ^. 1943 ^. 1944 ^. 1945 ^. 1946 ^.
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-1938- 1939 ^. 1940 ^. 1941 1942 ^. 1943 ^. 1944 ^. 1945 ^. 1946 ^. 1947 ^.
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-1939- 1940 ^. 1941 ^. 1942 1943 ^. 1944 ^. 1945 ^. 1946 ^. 1947 ^. 1948 ^.
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-1941- 1942 ^. 1943 ^. 1944 1945 ^. 1946 ^. 1947 ^. 1948 ^. 1949 ^. 1950 ^.
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-1942- 1943 ^. 1944 ^. 1945 1946 ^. 1947 ^. 1948 ^. 1949 ^. 1950 ^. 1951 ^.
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-1943- 1944 ^. 1945 ^. 1946 1947 ^. 1948 ^. 1949 ^. 1950 ^. 1951 ^. 1952 ^.
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-1944- 1945 ^. 1946 ^. 1947 1948 ^. 1949 ^. 1950 ^. 1951 ^. 1952 ^. 1953 ^.
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-1945- 1946 ^. 1947 ^. 1948 1949 ^. 1950 ^. 1951 ^. 1952 ^. 1953 ^. 1954 ^.
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-1946- 1947 ^. 1948 ^. 1949 1950 ^. 1951 ^. 1952 ^. 1953 ^. 1954 ^. 1955 ^.
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-1947- 1948 ^. 1949 ^. 1950 1951 ^. 1952 ^. 1953 ^. 1954 ^. 1955 ^. 1956 ^.
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-1948- 1949 ^. 1950 ^. 1951 1952 ^. 1953 ^. 1954 ^. 1955 ^. 1956 ^. 1957 ^.
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-1949- 1950 ^. 1951 ^. 1952 1953 ^. 1954 ^. 1955 ^. 1956 ^. 1957 ^. 1958 ^.
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-1950- 1951 ^. 1952 ^. 1953 1954 ^. 1955 ^. 1956 ^. 1957 ^. 1958 ^. 1959 ^.
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This page indexes the individual years pages.

Twenty-first century

2100 - 2099 - 2098 - 2097 - 2096 - 2095 - 2094 - 2093 - 2092 - 2091

2090 - 2089 - 2088 - 2087 - 2086 - 2085 - 2084 - 2083 - 2082 - 2081

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19th century - 20th century - 21st century
1890s 1900s 1910s - 1920s - 1930s 1940s 1950s
1926 1927 1928 - 1929 - 1930 1931 1932

Year 1937 (MCMXXXVII
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19th century - 20th century - 21st century
1900s 1910s 1920s - 1930s - 1940s 1950s 1960s
1935 1936 1937 - 1938 - 1939 1940 1941

Year 1938 (MCMXXXVIII
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19th century - 20th century - 21st century
1900s 1910s 1920s - 1930s - 1940s 1950s 1960s
1936 1937 1938 - 1939 - 1940 1941 1942

Year 1939 (MCMXXXIX
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19th century - 20th century - 21st century
1910s 1920s 1930s - 1940s - 1950s 1960s 1970s
1937 1938 1939 - 1940 - 1941 1942 1943

Year 1940 (MCMXL
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19th century - 20th century - 21st century
1910s 1920s 1930s - 1940s - 1950s 1960s 1970s
1938 1939 1940 - 1941 - 1942 1943 1944

Year 1941 (MCMXLI
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19th century - 20th century - 21st century
1910s 1920s 1930s - 1940s - 1950s 1960s 1970s
1939 1940 1941 - 1942 - 1943 1944 1945

Year 1942 (MCMXLII
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19th century - 20th century - 21st century
1910s 1920s 1930s - 1940s - 1950s 1960s 1970s
1940 1941 1942 - 1943 - 1944 1945 1946

Year 1943 (MCMXLIII
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