test and debug SMD circuits using parts as small as grains of sand. We have seen a lot of stereo microscope hacks here at Hackaday, so it helps to take a look inside one to understand how they work.

Between 18,000 and 11,000 years ago, the amount of carbon dioxide in the atmosphere suddenly shot up. This caused rapid ...

Crystalline: This type is commonly found in sand, gravel, and quartz. Under a microscope, its sharp crystalline form looks like glass. Amorphous: This type can be found naturally in the ...