| List of years in science (Table) |
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| … 1899 • 1900 • 1901 • 1902 • 1903 • 1904 • 1905 • 1906 • 1907 • 1908 – 1909 – 1910 • 1911 • 1912 • 1913 • 1914 • 1915 • 1916 • 1917 • 1918 • 1919 … |
| Related time period or subjects |
| … 1906 • 1907 • 1908 – 1909 – 1910 • 1911 • 1912 … … 1870s • 1880s • 1890s – 1900s – 1910s • 1920s • 1930s … … 19th century – 20th century – 21st century … |
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The year 1909 in science and technology involved some significant events, listed below.
Contents |
Archaeology
- Discovery of the Burgess Shale Cambrian fossil site
Astronomy
- Comet Halley first becomes visible on a photographic plate.
Geology
- Ernest Shackleton's expedition finds the magnetic South Pole.
Physics
- Albert Einstein together with Marcel Grossmann starts to develop a theory which would bind metric tensor gik, which defines a space geometry, with a source of gravity, that is with mass
- Hans Geiger and Ernest Marsden discover large angle deflections of alpha particles by thin metal foils
- Ernest Rutherford and Thomas Royds demonstrate that alpha particles are doubly ionized helium atoms
Medicine
- Karl Landsteiner develops system of blood groups.
Technology
- Leo Baekeland presents the Bakelite hard thermosetting plastic
- Einar Dessau uses a short-wave radio transmitter becoming the first radio broadcaster.
- Louis Bleriot is the first man to fly across the English Channel in a heavier-than-air craft.
Awards
Births
- January 5 - Stephen Cole Kleene (d. 1994), mathematician.
- April 13 - Stanislaw Marcin Ulam (d. 1984), mathematician.
- May 7 - Edwin H. Land (d. 1991), inventor and founder of Polaroid.
- November 24 - Gerhard Gentzen (d. 1945), mathematician.
- Giulio Racah (d. 1965), Israeli mathematician and physicist.
Deaths
- January 12 - Hermann Minkowski (b. 1864), mathematician.
- July 11 - Simon Newcomb (b. 1835), astronomer.
- August 27 - Emil Christian Hansen (b. 1842), fermentation physiologist.
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