1904 in science

See also: 1903 in science, other events of 1904, 1905 in science and the list of years in science.

Astronomy

• Edward Maunder plots the first sunspot "butterfly diagram"
• Himalia, a moon of Jupiter, discovered at Lick Observatory

Physics

• Vacuum tube invented by John Ambrose Fleming

Births

• January 26 - Ancel Keys, nutritionist
• March 20 - B. F. Skinner, behavioral psychologist (+ 1990)
• April 22 - Robert Oppenheimer, physicist (+ 1967)
• August 28 - Secondo Campini, Italian jet pioneer

Deaths

• January 20 - Dmitri Ivanovich Mendeleev, Russian chemist and inventor of the Periodic table

Referenced By