Demo Number 019
Location Shelf 33
Description This demo was designed to be used on an overhead projector. Place two electrodes, or electrode plates in the dish with saltwater, connect them to the H.V. Power supply (shelf 61). When you put Potassium Permanganate in the water, you can see electric field lines.

Note that the demo has been upgraded from the picture. If help is needed for the setup, contact the Demo Room Coordinator.

 Related Demos
  • There are a few ways to use this demo. There are 2 round electrodes for the water, and 2 plate electrodes. There is also a large metal hoop that can be used to simulate grounded potential at infinity. The picture here is of the two, round electrodes at a positive potential and the metal plate at ground. When the Potassium Permanganate is added, it spreads out along the field lines that would represent 2 protons. The plates can be used to show capacitor field lines.

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This Demo is Part of the following Categories: 5B10 Electric Field