A clock that never shows the same time twice sounds like a pretty bad clock, but believe it or not, there's one man who would have to disagree. Damjan Stankovic, a digital product designer from Serbia, has created a prototype electro-mechanical clock that features a liquid display. By using ferrofluid, a liquid magnet that reacts when near magnetic fields, he was able to create a clock display that never stops moving.
The project, entitled "Rhei," serves as an art installation that illustrates time's fluidity. Stankovic doesn't see this clock as his final application of this technology, but rather a minor representation of its future potential. For a more detailed look at how the clock transitions, check out this short clip.