Electric and magnetic effects were known and even used by ancient civilizations, for example the Chinese used the compass, which is based in the magnetic field of the Earth at least from the year 1000 BC. Magnetism was considered strange and miraculous by the ancients<ref>http://discovermagazine.com/2008/may/02-three-words-that-could-overthrow-physics</ref>, and would not begin to be understood until the works of [[Michael Faraday]] in the 19th century, | Electric and magnetic effects were known and even used by ancient civilizations, for example the Chinese used the compass, which is based in the magnetic field of the Earth at least from the year 1000 BC. Magnetism was considered strange and miraculous by the ancients<ref>http://discovermagazine.com/2008/may/02-three-words-that-could-overthrow-physics</ref>, and would not begin to be understood until the works of [[Michael Faraday]] in the 19th century, |