See also: 1843 in science, other events of 1844, 1845 in science and the list of years in science.

Table of contents

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

Astronomy

• Friedrich Bessel explains the wobbling motions of Sirius and Procyon by suggesting that these stars have dark companions

• Karl Klaus discovers ruthenium

• Joseph Liouville finds the first transcendental number
• Hermann Grassmann studys vectors with more than three dimensions

• May 11 - Samuel Morse send the first message using Morse code
• William Fox Talbot publishes the first photographic book , The Pencil of Nature

• Copley Medal: Carlo Matteucci
• Wollaston Medal for Geology: William Conybeare

• March 25 - Adolf Engler, German botanist († 1930)
• April 20 - Ludwig Boltzmann, Austrian physicist famous for the invention of statistical mechanics († 1906)
• August 6 - James Henry Greathead, British civil engineer († 1896)
• August 13 - Friedrich Miescher, Swiss biologist († 1895)
• August 22 - George Washington DeLong, Arctic explorer († 1881)
• October 3 - Sir Patrick Manson, Scottish parasitologist, the "father of tropical medicine" († 1922)
• November 25 - Karl Benz, German automobile engineer († 1929)