Can anyone describe to me what happens to electrons when one material is charged negatively by rybbing it on a second material, what must be different about the materials for this to work? And why does vinigear act as such a better electrolyte then water in a wet cell type? Why is a complete curcuit required in order to have a continoius flow of current? Can anyone explain the difference between conventuoional current and electron flow? why were they both developed?