| Point Source: During Run mode, the point source generates "ripple" waves with circular fronts. You can only place point sources in Ripple Tanks. Once you put a point source in a Ripple Tank, you can move it freely around the tank, but you cannot move it out of that tank. In the point source's Properties Box, you can set the wave frequency to between 1 and 5 Hz; choose the wave amplitude; and set the initial phase angle (in radians) of emitted waves. You can also put the point source in single pulse mode, which means the point source generates a single wave and then shuts off. For single pulse mode, the Ripple Tank's begin time must be set equal to zero. If a Ripple Tank has a movable bottom, you must remove baffles and point sources before running the simulation.