1921 In Science
See also:
Other events of 1921
List of years in science
...
1920 in science
1921 in science
1922 in science
...
The year 1921 in
science
and
technology
included many events, some of which are listed here.
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
(d.
1989
),
physicist
, human rights activist,
Nobel Laurette in Peace
Deaths
March 29
-
John Burroughs
(b.
1837
),
naturalist
.
October 23
-
John Boyd Dunlop
(b.
1840
),
inventor
.
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