EM4.4 Plotting of Equipotential Lines
This is a complicated set up to hear field strength. Two pieces of metal are placed in a glass tray of water on the vu graph. They are connected to opposite ends of an audio oscillator. Two probes are attached to an amplifier, which is in turn connected to a speaker. The probes are placed in the water, and the class hears the oscillator. The intensity depends on the difference in potential between probes. If the straight pieces of metal are used, sound increase from one to the other, but not parallel to the pieces. The kit comes with circular pieces to demonstrate circular fields, and other figures. For plotting purposes and for better view, a piece of transparent graph paper is placed underneath the glass tray.
Equipment Location: D53, E33, F17, D62