Ì÷rsted Magnetic Needle, Electromagnetism, 1820
Deviation of the magnetic needle by current of battery. Hans Christian Ì÷rsted (August 14, 1777 - March 9, 1851) was a Danish physicist and chemist who discovered that electric currents create magnetic fields, an important aspect of electromagnetism. In 1820 Ì÷rsted noticed a compass needle deflected from magnetic north when an electric current from a battery was switched on and off, showing a relationship between electricity and magnetism. His initial interpretation was that magnetic effects radiate from all sides of a wire carrying an electric current, as do light and heat. He began more intensive investigations and published his findings, showing that an electric current produces a circular magnetic field as it flows through a wire. In 1825, Ì÷rsted made a significant contribution to chemistry by producing aluminium for the first time isolating the element via a reduction of aluminium chloride. The unit of magnetic induction (oersted) is named for him. He died in 1851 at the age of 73.
Size: 4200px × 3394px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: -, 1820, 1820s, 19th, art, artwork, bw, century, christian, compass, current, danish, drawing, electric, electrical, electricity, electro-magnetism, electromagnetism, engraving, european, famous, field, figuier, grandes, great, hans, historic, historical, history, illustration, important, invention, inventions, les, louis, magnetic, magnetism, needle, notable, oersted, orsted, physics, science, Ì÷rsted
