AirClock

AirClock is a time display that uses air flow to represent time. Two spheres that float in separate glass tubes represent hours and minutes. Air flux changes according to time, making the spheres move up and down.

Turning the clock on elevates the spheres upwards through glass tubes and sets them in position calculated from the current time. The hours and minutes scales are engraved on the tubes . When you check the time you can leave the AirClock turned on and experience the true nature of time flow.