Harp and Sound Waves

The curves in Figure 4 correspond to what would happen if A and B in the harp apparatus vibrated separately in a slightly different pitch (?) and what would happen if these vibrations were summed. (4 oscillations of B to 5 of A). Curves above the line indicate positive current; those below, negative.
Copyright (c) 1994 by Michael E. Gorman, all rights reserved.
Last Modified: Sunday, 20-Nov-1994 22:22:20 EST