YouTuber brusspup is known for his videos of spectacular scientific experiments and amazing optical illusions. In his latest video he, again, laughs gravitiy straight in the face before giving it a swift kick in the nuts. Prepare to be amazed, as you see water hang in mid-air and even flow backwards!

What sorcery is this, you ask? Brusspup used a subwoofer with a 24hz sine and a camera shooting at 24 frames per second to make this magic happen. Brusspup further explains how exactly this works:

Basically your cameras frame rate is synced up with the rate of the vibrations of the water so it appears to be frozen or still. Now if you play a 23 hz sine wave your frame rate will be off just a little compared to the sine wave causing the water to “move backward” or so as it appears. You can play a 25 hz sine wave and cause the water to move slowly forward.

I hope you enjoyed it and don’t forget to check out brusspup’s youtube channel for more mindblowing illusions.