The effect that you are seeing can’t be seen with the naked eye. The effect only works through the camera. Set up your camera and switch it to 24 fps. Set your tone generating software to 24hz and hit play.Turn on the water. Now look through the camera and watch the magic begin. If you want the water to look like it’s moving backward set the frequency to 23hz. If you want to look like it’s moving forward in slow motion set it to...