One of the flattest materials, and the source will surprise you

Scanning a variety of precision optical and metrology equipment to find the flattest and smoothest material CONSIDER SUBSCRIBING 🥰 ☕Buy me a coffee? 🔬Or Patreon if that’s your jam: 📢Twitter: 💻Discord: In the very first AFM video, I showed a “precision“ gage block and everyone was surprised how rough it looked. So today we are scanning a variety of surfaces (gage block, mirrors, silicon, mica) to see how they compare in flattness and roughness. The flattest surface is considered “atomically flat“, meaning the surface is a single, continuous layer of atoms in the crystal all at the same height. Wild! I mention in the video, but it should be noted that flatness and smoothness/roughness are not quite the same. Flatness is a global property of how planar the surface is, whil