My entry for the science challenge. This little device generates a representation of standing waves, a special kind of wave.

Standing waves are a kind of transverse wave. Transverse waves may sound fancy, but they are your expected, normal kind of wave. Ocean waves are a form of transverse waves. If any of you are taking algebra 2 at the moment, sine waves and cosine waves are also transverse waves.

What makes standing waves special is that they do not have any horizontal movement of the wave, There is only vertical movement. The points where there is the most movement are called antinodes. The antinodes are marked with red paint.

IMPORTANT: Look at the device in the same angle that is in the first screenshot to see some standing wave action. Regular standing waves will be generated two seconds after you bring the throttle to 100 percent.