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Notable Historical Events in 1804 on the 7th

1804Naturalist Alexander von Humboldt reports his discovery of the decrease in intensity of Earth's magnetic field from the poles to the equator in a memoir to the Paris Institute

Historical Events in 1804 on the 7th
Date Event
Dec 7
Naturalist Alexander von Humboldt reports his discovery of the decrease in intensity of Earth's magnetic field from the poles to the equator in a memoir to the Paris Institute 
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