Apparently they’ve either got a lot of time on their hands or too many interns at Google Zurich. The neutral branch of the Goog recently put together a tribute to Star Wars using nothing but white Lego and light.
The real kicker is that you’ll have to see what happens when the light tracks across. Meanwhile, have a time lapse!
If you’re curious about how the effect is pulled off, essentially it’s done with some careful trickery. Here’s Drzach & Suchy, the design firm who built it, explaining how the process works:
…the images are considered in a pixel-by-pixel manner, and for each pixel of the an appropriate building block is placed at the corresponding place in the panel… The main observation underlying the concept of SCP is that the shadow cast by a physical object depends on the shape of the object and the direction of the illumination. This enables the control of the shadow by appropriate design of an object for specific lighting conditions.
The overall result is, as you angle the light, it creates a different visual effect. Like we said, watch the video; you’ll see what we mean.