Corvillus

This video is amazing. By projecting a strobe of ultraviolet LEDs onto fluorescent drops, a series of very interesting effects is created. Initially it just looks like a normal drop going down, but after changing the frequency of the strobe, it suddenly is suspended in midair. The suspended drop can still be interacted with, but it remains suspended! With another change of the frequency, suddenly the drops are going up instead of down! This explanation does the video no justice, so watch it now.

More here: cre.ations.net - Creation: The Time Fountain