Description

Prime numbers form a sunflower of light. Three invisible bearings mark the hour, minute, and second by brightening the points they pass. A small center disc shows the local 24-hour time.

The pattern contains all 278 primes from 2 through 1800, arranged by the golden angle. It stays circular on round and rectangular Pebbles. White and gray points glow on color screens; monochrome screens show the motion through changing dot sizes.

Prime Spiral updates once a second. Tap your wrist for about six seconds of smoother motion. It needs no phone connection, account, or settings.

Created by Luke Steuber for Ambient Time.