Freezing water with sound [video]
According to Gizmodo:
Posted by Kate Rinsema
As the water is run through the tube, it begins vibrating at the same frequency as the speaker. In turn, the DSLR used to film has its refresh rate synced accordingly—each droplet and rivulet pulses at the exact same time the camera captures an image to create motion, or in this case, the lack thereof. An extremely neat trick. No go forth and virtually defy the dictates of physics on your own.