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| List of years in science (Table) |
|---|
| … 1794 • 1795 • 1796 • 1797 • 1798 • 1799 • 1800 • 1801 • 1802 • 1803 – 1804 – 1805 • 1806 • 1807 • 1808 • 1809 • 1810 • 1811 • 1812 • 1813 • 1814 … |
| Related time period or subjects |
| … 1801 • 1802 • 1803 – 1804 – 1805 • 1806 • 1807 … … 1770s • 1780s • 1790s – 1800s – 1810s • 1820s • 1830s … … 18th century – 19th century – 20th century … |
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The year 1804 in science and technology involved some significant events, listed below.
Contents |
Chemistry
The drug morphine is isolated, and many elements are discovered, including cerium, iridium, osmium, palladium, and rhodium:
- William Hyde Wollaston discovers palladium, and how to make malleable platinum.
- Jöns Jakob Berzelius discovers cerium.
- The element iridium is discovered in the acid-insoluble residues of platinum ores by English chemist Smithson Tennant.
- The element rhodium is discovered by William Hyde Wollaston in crude platinum ore.
- The element osmium is discovered by the English chemist Smithson Tennant.
- German pharmacist Friedrich Sertürner isolates morphine from opium for the first time.
Exploration
- May 14 - The Lewis and Clark Expedition departs from Camp Dubois and begin their historic journey by traveling up the Missouri River
Geology
- Alexander von Humboldt discovers that the Earth's magnetic field decreases from the poles to the equator
Meteorology
- Joseph Louis Gay-Lussac and Jean Baptiste Biot study the atmosphere from a hot-air balloon
Technology
- Richard Trevithick produces his first railway locomotive
Awards
Births
- March 8 - Alvan Clark, telescope manufacturer (d. 1887)
- July 20 - Richard Owen, anatomist and paleontologist (died 1892)
- September 14 - John Gould, zoologist (died 1881)
- October 24 - Wilhelm Eduard Weber, physicist (died 1891)
- December 10 - Carl Gustav Jakob Jacobi, mathematician (died 1851)
- Robert Schomburgk, explorer (died 1865)
- William Stokes, physician (died 1878)
- Heinrich Lenz, physicist (died 1865)
- Matthias Schleiden, biologist (died 1881)
Deaths
- February 6 - Joseph Priestley, chemist (born 1733)
- October 2 - Nicolas-Joseph Cugnot, engineer (born 1725)
- Pierre Méchain, astronomer (born 1744)
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