This simulation shows two wave-pulses propagating in different directions. You may choose to have the pulses both be positive (similar pulses) or have one pointing in each direction (opposite pulses). One pulse is always of amplitude 5 units; you may choose to have the second pulse at amplitude 5 or 2.5 units. Pressing Run will start the simulation. You may pause the simulation or step your way through it, if you find the free running one too fast to follow. The blue line shows the resultant disturbance, and may be thought of as a picture of the wave on a stretched string.. When the pulses are both present in the same place, we show the contribution of each pulse to the total disturbance. Credits