21 sept 1873 año - The Theory of Electromagnetism
Descripción:
"Electricity and magnetism were once thought to be separate forces. However, in 1873, Scottish physicist James Clerk Maxwell developed a unified theory of electromagnetism. The study of electromagnetism deals with how electrically charged particles interact with each other and with magnetic fields." (Lucas, LiveScience).
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fecha:
21 sept 1873 año
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~ 151 years ago