A really lovely, slightly glitchy satellite map of lights over the southwest United States. Taken on August 31, 2000 and found buried deep in the NOAA FTP server.
Mini Mill Ring Light
The corner of my studio where my mini mill sits is definitely under-lit. When I got my mill, I first installed a cheap IKEA gooseneck LED lamp, which worked pretty well but was often in the way. So I built an LED ring light for the mill, which gives broad and even light, moves with the cutting tool, and is super low-profile.
Drive Speed and Distance Light Travels
| FORMAT | READ TIME | DISTANCE LIGHT TRAVELS |
|---|---|---|
| CPU | < 0.4 nanoseconds | 0.12 meters |
| RAM | 12 nanoseconds | 3.5 meters |
| Hard-drive | 7 milliseconds | 2098 km (about the same distance as Munich to Moscow) |
(from my notes archive)