Exploring Magnetism

Around 1000 A.D., the magnetic compass was discovered in China, but not until 1600 A.D. did William Gilbert publish “De Magnete,” declaring that Earth is a giant magnet. More recently, scientists have found magnetic fields associated with planets and the Sun. It is now well known that the Sun’s magnetic field reaches out past the planets. Charged particles spiral around this magnetic field as they move out past the planets with the magnetic field. Well, you get the picture. Actually, you get the video. 🙂