Modelle des Kosmos: Modelle der Erde

Modelle des Kosmos: Modelle der Erde

Barlow’s sphere
After the discovery of induction, Peter Barlow criticizes the comparison of the Earth with a permanent magnet. His model of the Earth (around 1840) is a spherical coil with current flowing through it. Barlow believes that magnetism has no real existence.
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