Movie - a solid

A bakelite rod is rubbed with fur and brought close to a light sphere that is covered with aluminum foil. The sphere at first is attracted toward the rod. After it has touched the rod, the sphere is repelled. A device that generates ions in the air is brought near the rod and this causes the repulsion to stop. Next a glass rod is rubbed with a piece of silk. When this is brought near the sphere, the sphere is at first attracted, but after it touches the rod, it is repelled away. Now the ball is left to hang by itself and the bakelite rod is rubbed with fur and brought close to the ball again. The ball is now strongly attracted toward the bakelite rod and it continues to be attracted toward the rod until the device to remove electric charges is used.

The file name of this movie is STATIC0.MOV and is located in the directory/folder named MOVIES/STATIC.


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© 1997 Division of Chemical Education, Inc., American Chemical Society. All rights reserved.