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1904 in science

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device that controls electric current between electrodes in an evacuated container

plum pudding model

scientific model of the atom first proposed by J. J. Thomson in 1904

blink comparator

Astronomical instrument used to measure movements or variations in the brightness of celestial objects

Scottish National Antarctic Expedition

expedition to the Antarctic in 1902-04

Ziegler Polar Expedition

failed polar expedition between 1903-1905

1904 in science

overview of natural science-related events during the year of 1904

solar eclipse of September 9, 1904

solar eclipse of March 17, 1904

20th-century annular solar eclipse