Electromagnetism Demonstration
Observes an electric current deflecting a nearby compass needle.
Permanent historical records · Updated 2026-11-03
1820 in Denmark
Explore 2 historical events and records for Denmark in 1820.
Historical records for Denmark in 1820
Sorted by month and day. Records with no month are shown last. Showing 2 of 2 unique records.
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April
Magnetic Effect of Electric Current
Establishes an experimental connection between electricity and magnetism.
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.