1600 – De Magnete

In 1600, William Gilbert published a study of magetic forces and their ability to affect a compass needle.  Gilbert’s studies convinced him that the earth was a giant magnet.  He also believed (incorrectly) that the rotation of the Earth and the magetic field of the Earth had the same cause.

In de Magnete, Gilbert also wrote of his studies of static electricity produced by rubbing amber and used the word “electricus” to describe it, which later led to the modern terms, electric and electricity.

PREREQUISITE:
magnet
compass
Peter of Maricourt

SUBSEQUENT:
electricity
battery
cathode ray tube
electromagnetism
Kepler
Galileo

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