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 ```A friend clames that the has disassembled a charged Leyden Jar, touched all of the pieces put it back together and them discharged it. Is this possiable? How? Why?```
 ```Hello rustyiii, Great questions! "A friend claims that the has disassembled a charged Leyden Jar, touched all of the pieces put it back together and them discharged it." Q. Is this possible? How? ------------------------------------------------------------------------------- Yes it is. At the following example you will note that that is states the jar can be carefully taken apart by hand, using a 'dissectible' Leyden Jar. Dissectible Leyden Jar "The inner can is lifted out with an insulated tool, or, with care, by hand. At this point the parts of the jar are safe to handle, and the glass jar can be lifted out, the inner and outer cans touched to each other, or touched to the glass jar in any combination. You can even give the pieces to the students to handle...." http://www.physics.ucla.edu/demoweb/demomanual/electricity_and_magnetism/electrostatics/dissectible_leyden_jar.html The 'how' of the question is also answer at the link above. You will probably get a better understanding when I explain 'why' below. Q. Why? ------------------------------------------------------------------------------- The Layden Jar is the earliest form of a capacitor. A capacitor stores electrical charge, as does the Layden Jar. The jar material is the dielectric, as it is the material between the two layers of metal. When the static electricity is applied, here is what happens: 1) The charge causes a potential difference in the outer metal and inner metal. 2) The charge is stored in the dielectic, as current will no pass through it. 3) Once taken apart the charge still resides in the dielectric. (glass etc..) You can handle all pieces including the dielectric with stored electrical energy. This is because there is no discharge path. Once the Layden Jar is reassembled, the energy still stored in the jar can be disharged by providing a path for electrical current to flow. In most cases this is done by shorting the inner 'metal' to the outter metal. Since these two conductors have a potential difference (one is grounded), the electrical energy takes the path of least resistance, and is discharged! Interesting experiment isn't it? You can find more resources here for more interesting facts : Make your own Layden Jar http://fargo.itp.tsoa.nyu.edu/~lewis/electricity/pages/xleyden.html Layden Jar - defined http://www.wikipedia.org/wiki/Leyden_jar To assist with this answer I searched Google for : Leyden Jar ://www.google.com/search?q=Leyden+Jar Should you need more resources or further help, please ask for clarification. I will do all I can to assist you further! SgtCory```