It is so surprising that athe Wimshurst machine can generate up tp 1,000,000 voltage with the size of 50 cm! As I know, in order to generate such a high voltage on its 2 terminals, there must be a very large quantity of charges being "collected and stored" in the Leyden Jars. Am I right? If this is true, where are the charges from? The aluminium foils? or the "neutralizing brushes?" Thanks!!! Twukwuw.