Happy Birthday Hans Christian Ørsted (Oersted)

Happy Birthday Hans Christian Ørsted (Oersted).Hans Christian Ørsted, one of the leading scientists of the nineteenth century, played a crucial role in understanding electromagnetism. In 1820 he discovered that a compass needle deflects from magnetic north when an electric current is switched on or off in a nearby wire. This showed that electricity and magnetism were related phenomena, a finding