1904 in science
From Wikipedia, the free encyclopedia.

The year 1904 in science and technology.

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

The original article can be found at: http://en.wikipedia.org/wiki/1904_in_science.
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