| List of years in science (Table) |
|---|
| … 1894 • 1895 • 1896 • 1897 • 1898 • 1899 • 1900 • 1901 • 1902 • 1903 – 1904 – 1905 • 1906 • 1907 • 1908 • 1909 • 1910 • 1911 • 1912 • 1913 • 1914 … |
| Related time period or subjects |
| … 1901 • 1902 • 1903 – 1904 – 1905 • 1906 • 1907 … … 1870s • 1880s • 1890s – 1900s – 1910s • 1920s • 1930s … … 19th century – 20th century – 21st century … |
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The year 1904 in science and technology involved some significant events, listed below.
Contents |
Astronomy
- Edward Walter Maunder plots the first sunspot "butterfly diagram"
- The sixth moon of Jupiter, later called Himalia, discovered at Lick Observatory
Mathematics
- Henri Poincaré discovers the Poincaré sphere, leading him to formulate the Poincaré conjecture
Medicine
- Epinephrine first artificially synthesized by Friedrich Stolz.
Physics
- Vacuum tube invented by John Ambrose Fleming
- J. J. Thomson proposes the plum pudding model for the atom.
- Hantaro Nagaoka develops the Saturnian model for the atom.
Awards
Births
- January 26 - Ancel Keys, (d. 2004) nutritionist.
- March 20 - B. F. Skinner (d. 1990), behavioral psychologist.
- April 22 - Robert Oppenheimer (d. 1967), physicist.
- July 5 - Ernst Mayr (d. 2005), evolutionary biologist.
- August 28 - Secondo Campini (d. 1980), Italian jet pioneer.
- November 11 - J. H. C. Whitehead (d. 1960), British mathematician.
Deaths
- January 20 - Dmitri Mendeleev (b. 1834), Russian chemist and inventor of the Periodic table.
- May 10 - Henry Morton Stanley (b. 1841), explorer, journalist.
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