1825 in science

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The year 1825 in science and technology included many events, some of which are listed here.

Contents 1 Astronomy 2 Chemistry 3 Mathematics 4 Paleontology 5 Technology 6 Awards 7 Births 8 Deaths

[edit] Astronomy

• Pierre-Simon Laplace completes his study of gravitation, the stability of the solar system, tides, the precession of the equinoxes, the libration of the Moon, and Saturn's rings in Mecanique Celeste

[edit] Chemistry

• Michael Faraday isolates benzene
• Hans Christian Ørsted produces metallic aluminium in an impure form

[edit] Mathematics

• Augustin-Louis Cauchy presents the Cauchy integral theorem for general integration paths -- he assumes the function being integrated has a continuous derivative
• Augustin-Louis Cauchy introduces the theory of residues in complex analysis
• Johann Peter Gustav Lejeune Dirichlet and Adrien-Marie Legendre prove Fermat's last theorem for n = 5
• André-Marie Ampère discovers Stokes' theorem

[edit] Paleontology

• Georges Cuvier proposes his catastrophe theory as the cause of extinctions of large groups of animals
• Étienne Geoffroy Saint-Hilaire identifies Cuvier's fossil `crocodile´ as a teleosaurus

[edit] Technology

• September 27th - The world's first modern railway, the Stockton and Darlington Railway, opens

[edit] Awards

• Copley Medal: François Arago; Peter Barlow

[edit] Births

• May 4 - Sir Thomas Henry Huxley (d. 1895), English biologist.

[edit] Deaths

• October 6 - Bernard Germain Etienne (b. 1756), naturalist.