1920 in science
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| List of years in science (Table) |
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| … 1910 • 1911 • 1912 • 1913 • 1914 • 1915 • 1916 • 1917 • 1918 • 1919 – 1920 – 1921 • 1922 • 1923 • 1924 • 1925 • 1926 • 1927 • 1928 • 1929 • 1930 … |
| Related time period or subjects |
| … 1917 • 1918 • 1919 – 1920 – 1921 • 1922 • 1923 … … 1890s • 1900s • 1910s – 1920s – 1930s • 1940s • 1950s … … 19th century – 20th century – 21st century … |
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The year 1920 in science and technology involved some significant events, listed below.
Contents |
[edit] Biology
- Andrew Douglass proposes dendrochronology dating.
[edit] Meteorology
- Milutin Milankovic proposes that long term climatic cycles may be due to changes in the eccentricity of the Earth's orbit and changes in the Earth's obliquity.
[edit] Physics
- Megh Nad Saha states his ionization equation
- Albert Einstein delivers his Leiden Lecture
- Ernest Rutherford predicts the existence of the neutron.
- Arthur Eddington's observation of a total eclipse of the Sun seems to confirm the "bending of light" in Einstein's theory of Special Relativity.
- James Jeans discovers that the dynamical constants of motion determine the distribution function for a system of particles.
[edit] Technology
- The first transatlantic two-way radio broadcast is made.
- First domestic radio sets come to stores in USA – Westinghouse radio costs $10
