Here’s a fun little 7-minute video tutorial on how you can create interesting water illusions using an ordinary camera and some sound. It has to do with syncing the water drops to your camera’s frame rate.
The effect is something known as “Temporal Aliasing” or “the Wagon Wheel effect.”
“A 24 hz bass tone is sent through a speaker making the water vibrate 24 times a second, in a circular motion,” writes Joey Shanks of Shanks FX, the creator of the video. “With a fast enough shutter, the camera captures the same image frame after frame.”
This trick lets you make streams of water take on crazy shapes and patterns in a video. Here are some examples: