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dstich said:i got the foil inside by by making a tube from a 2 liter soda bottle a little larger than the inside of the jar then i wraped foil around the tube then i folded the tube put it through the mouth of the jar then let it unfold so it pressed the foil agenst the inside of the jar but now i get a smaller spark from the large leyden jar than i get from my little film canester one can anyone tell me why this is does it just need a LOT!!! of charging or what
Yes. You will get the most capacitance with a big (tall, large diameter), thin, glass container. If you use a film canister, it has to be 1/3 the thickness of glass if the other dimensions are equal (because of the differences in dielectric constant).dstich said:so if i understand right the further between the plates the less capacatence??? sory if im not getting this right im kindov a newb to electronics
I've decided to follow the dogs home and piss on their owners' lawns. :twisted:dstich said:thank you for all the help and Ron H good luck with your dog problems
You can store a (relatively) large charge if you have a high DC voltage. I calculated the capacitance of a quart glass jar to be about 2nF, +/-50%. Since charge Q=C*V, more voltage will give you more charge. The breakdown voltage of a glass jar 1.5mm thick (I don't know how thick they really are) is on the order of 12kV. So theoretically, you could store 24 microcoulombs on a quart Leyden jar. You can store a lot more charge on an electrolytic capacitor, but the high voltage is what makes the Leyden jar interesting.dstich said:I didn’t really make it for any particular use just to play around with but I would like to store a large charge with them
According to **broken link removed**, the dielectric constant is 3.0 to 6.0. Pretty sloppy, but better than zero to infinity.Dr.EM said:Kind of on topic, what do you think the dielectric constant of clingfilm is? I wondered if you could make a large foil cap with domestic tin foil and clingfilm :lol: