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Hans Christian Ørsted, Danish physicist and chemist, discovered electromagnetism and the element aluminium (born 1777)
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Hans Christian Ørsted
Danish chemist and physicist (1777–1851)
Hans Christian Ørsted, sometimes transliterated as Oersted, was a Danish chemist and physicist who discovered that electric currents create magnetic fields. This phenomenon is known as Oersted's law. He also discovered aluminium, a chemical element.Source: Wikipedia (CC BY-SA)
Electromagnetism
Fundamental interaction between charged particles
In physics, electromagnetism is an interaction that occurs between particles with electric charge via electromagnetic fields. The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interactions of atoms and molecules.…Source: Wikipedia (CC BY-SA)
Aluminium
Chemical element with atomic number 13 (Al)
Aluminium is a chemical element; it has symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has a great affinity towards oxygen, forming a protective layer of oxide on the surface when exposed to air.…Source: Wikipedia (CC BY-SA)
March 9
Day of the year
March 9 is the 68th day of the year in the Gregorian calendar; 297 days remain until the end of the year.Source: Wikipedia (CC BY-SA)