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Show ;H0W SPARK PLUG DOESJTS WORK "Some people seem to be in doubt whether tho electric current in passing pass-ing from one point to another fills the gap or actually jumps it," said Emll Grossman. "The Iruth of the matter is that the current i3 momentarily stored through means of the coil, .ind when tho circuit is broken by means of the commutator or other form of interrupter inter-rupter the tendency of the current io to keep on flowing, so it Jumos ihe ap "In order to complete its circuit, an it does or tends to do, it is necessary j for .t to jump from one point to un- other." |