Bulbdial clock relies on shadows to tell the time

Here’s a mixture of the old and the new – the Bulbdial clock that features an analog-style face sans hands. How do you tell the time then? Well, it features a “gnomon” which sticks up in the middle, while a trio of rings of inward-pointing LEDs are located around the rim, where each of them boasts of a different color and at a different angle relative to the face. The blue ring is located at the shallowest angle, where it will cast the longest shadow representing the “seconds” hand. As for the red ring, it is located at the steepest angle, casting the shortest shadow to represent the current hour. As for the middle green ring, it will let you know of the current minute. Trippin’!