EXPERIMENT 56. To study electrical repulsions.
Apparatus. Same as for [Exp. 55]; ebonite sheet, E S (No. 26).
112. Directions. (A) Charge E R, and place it in W S, [Fig. 29].
(B) Charge E S, and bring it slowly near one side of the charged end of E R.
EXPERIMENT 57. To study electrical repulsions.
Apparatus. A sheet of tissue-paper, T P (No. 31); shears or a knife. Cut T P, as in [Fig. 30]. Each leg should be about ¼ in. wide and 3 or 4 in. long.
113. Directions. (A) Heat the paper, then place it flat upon the table and electrify it by rubbing it with your hand. You must rub away from the uncut part, or you will break the legs.
(B) Raise T P, holding it by the uncut part. Note the action of legs, and make a sketch of them.
