Charge the dissectable Lyden jar with the Van de Graaff as shown above at left. Connect a wire to the outside of the jar as shown in the middle picture, and create a very loud and bright spark between the other end of the wire and the central post. After charging a sencond time you can separate the jar as shown above at right. Give the pieces to different students and have them touch the pieces together in pairs and ask: where is the charge? Put the jar back together and show that you still get a big spark. The use of the meter stick to separate the pieces as shown above is not necessary, but it is theatric. In fact, it is useful to separately ground the outside and then the inside and show that a charge is still stored.