1845 in science

List of years in science (Table)
… 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 …
Related time period or subjects
… 1842 1843 1844 1845 1846 1847 1848 … … 1810s 1820s 1830s 1840s 1850s 1860s 1870s … … 18th century 19th century 20th century …
Art Archaeology Architecture Literature Music Science more

The year 1845 in science and technology involved some significant events, listed below.

Contents 1 Events 2 Astronomy 3 Biology 4 Chemistry 5 Exploration 6 Medicine 7 Physics 8 Transport 9 Awards 10 Births 11 Deaths 12 References

Events

• January 14 – Physikalische Gesellschaft zu Berlin established and begins publishing Fortschritte der Physik and Verhandlungen.
• August 28 – The journal Scientific American begins publication.
• Alexander von Humboldt's Kosmos: Entwurf einer physischen Weltbeschreibung begins publication.

Astronomy

• April – Lord Rosse discovers that the nebula M51 has a spiral structure.
• Construction begins in Ireland of the "Leviathan of Parsonstown", a telescope built by Lord Rosse.

Biology

• August–September – Previously unknown Potato blight strikes the potato crop in ireland: start of the Irish Potato Famine.^[1][2]

Chemistry

• March 17 - Stephen Perry patents the rubber band in England.^[3]
• Edmond Frémy discovers the oxidizing agent Frémy's salt.

Exploration

• August - John Franklin's expedition with HMS Erebus and HMS Terror to find the Northwest Passage is last seen entering Baffin Bay prior to its mysterious disappearance.^[4]

Medicine

• December 27 - Anesthesia is used in childbirth for the first time, by Dr Crawford Long in Jefferson, Georgia.

Physics

• September 13 – Michael Faraday discovers that an intense magnetic field can rotate the plane of polarized light.

Transport

• July 26–August 10 – Isambard Kingdom Brunel’s iron steamship Great Britain makes the Transatlantic Crossing from Liverpool to New York, the first screw propelled vessel to make the passage.^[5][6]

Awards

• Copley Medal: Theodor Schwann
• Wollaston Medal for Geology: John Phillips

Births

• March 3 - Georg Cantor (d. 1918), mathematician.
• March 27 - Wilhelm Röntgen (d. 1923), physicist, discoverer of X-rays, Nobel laureate.
• May 4 - William Kingdon Clifford (d. 1879), geometer.
• May 16 - Ilya Ilyich Mechnikov (d. 1916), microbiologist, Nobel laureate.
• June 16 - Heinrich Dressel (d. 1920), archaeologist.
• July 4 - Thomas Barnardo (d. 1905), physician and philanthropist.
• September 11 - Emile Baudot (d. 1903), telegraph engineer.
• November 14 - Ulisse Dini (d. 1918), mathematician.
• Vasily Dokuchaev (d. 1902), geologist.

Deaths

• March 13 - John Frederic Daniell (b. 1790), chemist and physicist.
• October 18 - Dominique, comte de Cassini (b. 1748), astronomer.
• Jean Henri Jaume Saint-Hilaire (b. 1772), botanist.

References