PURPOSE: To show that the resistance changes with the temperature..
DESCRIPTION: A lamp is in series with a coil of wire. When the coil is immersed in Liquid Nitrogen and cooled the lamp glows brighter.
EQUIPMENT: The coil of wire is stored in the electricity and magnetism cabinet. The power supply is stored in general use. The foam container is stored on top of the general use cabinet.
SETUP TIME: 1/2 hour.
Updated by Jun Qi in 3/13/2000