The Circuit wall clock is a minimalist clock that tells time using light. The LED clock was created by Serbian designer Stevan Djurovic. At first glance it looks nearly impossible to tell time using Djurovic’s design. However, it becomes a breeze to read the clock once you realize how the light works.
For starters, the Circuit wall clock uses three LED lights that correspond to the hours, minutes and seconds. The light for the hours is on the outer rim of the clock; the light for the minutes is on the inside and the light for the seconds lies in the middle of the ring.