A Diffraction Grating Makes This Clock Readable

We’ve seen just about every possible way to make a clock here at Hackaday over the years. So it’s rare to have a first, but here we are with [Twisted & Tinned], who’s made a novel clock with a diffraction grating . The display of the clock looks for all the world like a jumble of LEDs, that is, until you place the grating in front of it.