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This model simulates the wave generating machine created by John Shive at Bell Laboratories and made famous by the Similarities in Wave Behavior film. The machine consists of horizontal cross-bars welded to a central wire spine that is perpendicular to the bars. The spine was constructed so that it can freely twist, allowing the cross-bars to produce wave-like patterns. The simulation allows various pulse shapes to be sent down the machine by selecting a function for the twist of the first rod or by dragging the first rod. The far end of the wave machine can be free or fixed, which changes the nature of the reflected wave. Change the lengths of the bars to simulate the effect of a wave propagating in a non-uniform medium. The original film that introduced Dr. Shive's wave generating machine can be viewed at no cost: Film: Similarities of Wave Behavior (AT&T Archives and History Collection). The Wave Machine model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive.
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