Para and diamagnetic materials in magnetic field with arc lamp.

Para and diamagnetic materials in magnetic field with arc lamp. Various paramagnetic and diamagnetic materials (about 1.5 cm. long) are suspended on a silk thread between the poles of an electromagnet. A large current (about 25 amps) is sent through the electromagnet coils. Paramagnetic samples will align parallel with the magnet poles. Diamagnetic samples will swing away, perpendicular to poles. Samples available are: aluminum, bismuth, carbon, copper, glass, iron, lead, nickel, platinum, silver, tin, and zinc, (liquid oxygen is available with advance notice). Best Paramagnetic: platinum and aluminum. Best Diamagnetic: bismuth and glass Care should be taken to not leave the electromagnet on for very long (20 sec.).