What should I expect to see from my Leydens jar?
My son has built 3 different Leyden's jars for a science fair. None seem to spark. The foil is very smooth( it looks like it was painted on) There are no holes. I've tried different chains. I've tried glass jars, as well as plastic. We are trying to charge to jar by rubbing a balloon on our heads and touching the metal ball on top. We hear a "pop" but never see a spark. We've continued this up to 100 times, and still no spark from the wire which touches the outside foil, and points to the metal ball on the lid. I'm definately no scientist! Do you have any ideas? I've tried holding the jar while charging it, as well as sitting it down, and I still get no results. The closest thing I've gotten was the balloon appeared to act like a magnet; it pulled the plastic jar closer when the balloon had static on it. Thank You, Jodie