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Concept
1903 in science
Summary
The year 1903 in science and technology involved some significant events, listed below.
June 27 – 19-year-old American socialite Aida de Acosta becomes the first woman to fly a powered aircraft solo when she pilots Santos-Dumont's motorized dirigible, "No. 9", from Paris to Château de Bagatelle in France.
December 17 – First documented, successful, controlled, powered flight of a heavier-than-air aircraft with a petrol engine by Orville Wright in the Wright Flyer at Kill Devil Hills, North Carolina.
Konstantin Tsiolkovsky begins a series of papers discussing the use of liquid fuel rockets to reach outer space, space suits, and colonization of the Solar System.
The type specimen of the vampire squid (Vampyroteuthis infernalis) is described by Carl Chun.
Fauna and Flora International is founded as the Society for the Preservation of the Wild Fauna of the Empire by a group of British naturalists and American statesmen in Africa.
Peter Cooper Hewitt demonstrates the mercury-vapour lamp.
Mikhail Semyonovich Tsvet invents chromatography, an important analytic technique.
The International Committee of Atomic Weights publishes the inaugural atomic weights report.
October – Frank Nelson Cole demonstrates that the Mersenne number 267-1, or M67, is composite by factoring it as 193,707,721 * 761,838,257,287.
Fast Fourier transform algorithm presented by Carle David Tolmé Runge.
Edmund Georg Hermann Landau gives considerably simpler proof of the prime number theorem.
George Darwin and John Joly claim that radioactivity is partially responsible for the Earth's heat.
Prosper-René Blondlot claims to have detected N rays.
March–April – David Bruce identifies the parasitic Trypanosoma protist as the source of African trypanosomiasis ("sleeping sickness").
May 10 – Antoni Leśniowski publishes the first article implicating what will later be known as Crohn's disease, in the Polish weekly medical newspaper Medycyna.
Alfred Walter Campbell divides the cytoarchitecture of the human brain into 14 areas.
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