190. Directions. (A) Charge and lift the condenser as just explained ([Exp. 87]). [Fig. 54].
(B) With your right hand touch the upper tin alone, then the lower tin alone.
(C) Touch both tins at the same time, and note the action of the lower one.
191. Discussion. This clearly shows how strongly the two electrifications are bound in the condenser. Each refuses to escape to the earth, but they instantly rush together at the first opportunity. The dielectric may be shattered in a very heavily-charged condenser by this strong attraction.
EXPERIMENT 89. To show how the condenser maybe slowly discharged.
Apparatus. [Fig. 55]. The condenser ([Exp. 83]); the carbon electroscope with support ([Exp. 58]); the electrophorus ([Exp. 68]).