I have just built a saltwater Leyden jar from a drink bottle and foil and am genuinely joyed that it produces a spark after charging from the TV screen. Good Fun. So I understand that the charge lies on the interfaces between jar/foil and jar/saltwater. Then I googled "saltwater capacitor" and saw that some people have made devices using a bottle of saltwater sat in a bucket of saltwater, - so no foil. So it occured to me that maybe my Leyden jar could be "turned inside out" by having a jarful of saltwater with a decent sized coil of insulated wire submerged in it, (each end trailing out of the jar.) I was thinking of grounding the submerged wire. Then, sweeping the TV screen with a wire with a stripped end dipped in the saltwater. Do you think this will work before I go and buy some more wire? Any better ideas about grounding / charging? Thanks for reading.