The magic carpet: Water-floated magnetized balls form standing waves when driven by A-C magnetic field

Thousands of magnetized balls, floating free on water and activated by an a-c magnetic field, form a dynamic ever-changing raft. With the raft confined within a square frame, the “magic carpet” appears as a checkerboard array of hill-and-hollow standing waves driven by elastic chains of balls; this new phenomenon is an extension of magnetospherics.^1,2 The magnetic organization is worked out, wave phenomena are discussed, and phase relations are established.