H.C Ørsted - Elektromagnetismen
H.C Ørsted - Elektromagnetismen presents Hans Christian Ørsted’s Copenhagen discovery linking electric current with magnetic movement. A battery powered a platinum wire above a compass. When current passed through the wire, the compass needle moved, revealing a relationship between electricity and magnetism. Ørsted repeated the compass experiment with friends and colleagues. He tested stronger batteries, different compass housings, wires, and a freely hanging magnetic needle to examine the effect. The wire’s direction changed the compass needle’s movement. Ørsted observed that the force moved in a circle around the wire, with direction depending on current. He recorded his findings in Latin for scientists across Europe.
The discovery influenced later work by Ampère, Faraday, Maxwell, Hertz, and other researchers in electromagnetism. Michael Faraday later built an early electric motor. The same scientific development led towards electromagnetic induction, electric telegraphs, radios, generators, and motors. Maxwell’s equations connected light itself with electromagnetism. Valdemar Poulsen and Peder Oluf Pedersen developed an arc transmitter for continuous electromagnetic waves. This Copenhagen spot records a history of electromagnetism.
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