Choose between Longitudinal and Transverse waves from the options at the top of the settings panel.
Click the radio buttons to choose between continuous mode and pulse mode.
Continuous mode:
Use the sliders to adjust the basic wave properties (frequency, wavelength, amplitude, speed).
Toggle 'Label oscillations' to show/hide arrows showing the oscillations of individual particles.
Toggle 'Label peaks & troughs' to dynamically label the peaks and troughs of the wave.
Toggle 'Show graph' to show/hide a graph of displacement vs distance.
Toggle 'Measure distance' to bring up a ruler and two adjustable bars that can be used to pull up some markers for measuring distance to do wave speed experiments.
Toggle 'Show balloon/duck' to show how each type of wave affects a real-life object.
Toggle 'Rotatable mode', dragging the grey ring will rotate the wave, useful to explain why oscillations should be described as perpendicular/parallel rather than left/right or up/down.
Toggle 'Play tone' (Longitudinal mode only) to play a tone, adjusting the frequency/wavelength and amplitude will adjust the pitch and loudness.
Pulse mode:
Click the 'Emit pulse' button to emit a single wave pulse.
Adjust the 'Pulse strength' slider to change the size of the pulse.