See also: 1918 in science, other events of 1919, 1920 in science and the list of 'years in science'.
Physics Einstein's theory of General Relativity confirmed by Arthur Eddington's observation of a total eclipse of the Sun James Jeans discovers that the dynamical constants of motion determine the distribution function for a system of particles Technology XWA (now CFCF),in Montreal, Quebec is the first public radio station in North America to go the air. US Navy Naval Curtiss aircraft NC-4 commanded by Albert Cushing Read departs Trepassey, Newfoundland, for Lisbon via the Azores on the first transatlantic flight John Alcock and Arthur Brown depart St. John's, Newfoundland on the first nonstop transatlantic flight The British dirigible R-34 lands in New York, completing the first crossing of the Atlantic by an airship. Births January 23 - Hans Haas, future zoologist and oceanographer Deaths April 4 - Sir William Crookes, chemist and physicist Nobel Prizes Johannes Stark is awarded the Nobel Prize for Physics Jules Bordet is awarded the Nobel Prize for Medicine