1921 in science
From Wikipedia, the free encyclopedia.

The year 1921 CE in science and technology

See also: 1920 in science, other events of 1921, 1922 in science and the list of years in science.

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

• May 21 - Andrei Sakharov, physicist, human rights activist, Nobellaurette in Peace (+ 1989)

Deaths

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