| List of years in science (Table) |
|---|
| … 1911 • 1912 • 1913 • 1914 • 1915 • 1916 • 1917 • 1918 • 1919 • 1920 – 1921 – 1922 • 1923 • 1924 • 1925 • 1926 • 1927 • 1928 • 1929 • 1930 • 1931 … |
| Related time period or subjects |
| … 1918 • 1919 • 1920 – 1921 – 1922 • 1923 • 1924 … … 1890s • 1900s • 1910s – 1920s – 1930s • 1940s • 1950s … … 19th century – 20th century – 21st century … |
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The year 1921 in science and technology involved some significant events, listed below.
Contents |
Chemistry
- Thomas Midgley discovers the effective anti-knocking properties of Tetra-ethyl lead, which is used in "leaded" gasoline (petrol).
Medicine
- July 18 - The first BCG vaccination against tuberculosis.
- July 27 - Researchers at the University of Toronto led by biochemist Frederick Banting announce the discovery of the hormone insulin.
Physics
- T. Kaluza demonstrates that a five-dimensional version of Albert Einstein's equations unifies gravitation and electromagnetism.
Awards
- Nobel Prize
- Physics - Albert Einstein
- Chemistry - Frederick Soddy
- Physiology or Medicine - not awarded
Births
Deaths
- March 29 - John Burroughs (b. 1837), naturalist.
- October 23 - John Boyd Dunlop (b. 1840), inventor.
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