1934 жылғы ғылым мен техника жетістіктері

The year 1934 in science and technology involved some significant events, listed below.

Richard Tolman shows that black body radiation in an expanding universe cools but remains thermal. Georges Lemaître interprets the cosmological constant as due to a vacuum energy with an unusual perfect fluid equation of state.

The Mulliken scale of chemical element electronegativity is developed by Robert S. Mulliken. Norman Haworth and Edmund Hirst report the first synthesis of vitamin C.
J. D. Bernal and Dorothy Crowfoot first successfully apply the technique of X ray crystallography to analysis of a biological substance, pepsin. The first commercial heavy water plant is built at Vemork in Norway; production also starts this year at Dnepropetrovsk in the Soviet Union.

January 18 – The Iron Bridge in Shropshire, dating from the Industrial Revolution period, becomes an officially scheduled monument in England. Lewis Mumford publishes Technics and Civilization.

Penrose triangle devised.

March 25 – Enrico Fermi publishes his discovery of neutron activation of radioactive decay. Sonoluminescence is discovered at the University of Cologne. Gregory Breit and John A. Wheeler describe the Breit–Wheeler process. Henri Coandă obtains his first patent, in France, on the Coandă effect.

March 8 – Sodium thiopental, the first intravenous anesthetic, synthesized by Ernest H. Volwiler with Donalee L. Tabern of Abbott Laboratories, is first administered to human subjects. November 1 – William F. Wells publishes the Wells curve (or Wells evaporation falling curve of droplets) giving an explanation of the behavior of exhaled respiratory droplets and their influence on the transmission of infectious respiratory diseases. Outbreak of "atypical poliomyelitis", strongly resembling what would later be called chronic fatigue syndrome, affects a large number of medical staff at the Los Angeles County Hospital. George de Hevesy uses heavy water in one of the first biological tracer experiments, to estimate the rate of turnover of water in the human body. Austrian biochemist Regina Kapeller Adler develops an innovative early pregnancy test based on the presence of histidine in urine. Tudor Thomas' work on corneal grafting restores the sight of a man who had been nearly blind for 27 years.

April 3 – Percy Shaw patents the cat's eye road safety device in Britain. April 18 – Citroën Traction Avant introduced, the world's first front wheel drive monocoque (welded steel unit body) production automobile, designed by André Lefèbvre and Flaminio Bertoni. April 24 – Laurens Hammond patents the Hammond organ in the United States. The 135 film cartridge is introduced in Germany and the United States with the Kodak Retina camera, making 35mm film easy to use. The first commercial electronic television sets with cathode ray tubes are manufactured by Telefunken in Germany.

Samuel C. Bradford proposes Bradford's law of scattering, an example of Pareto distribution applicable in the bibliometrics of scientific literature and beyond. Karl Popper publishes Logik der Forschung.