HackerTube / Video
Measure the mass of an eyelash with a DIY microbalance
Applied Science
Ben Krasnow of Applied Science builds a DIY microbalance from an analog panel meter with an optical servo loop. It reaches about 5 micrograms of precision and is used to weigh a single eyelash at around 35 micrograms.
Pointed to as proof that you can weigh micrograms cheaply at home, and as a clear breakdown of how such a scale works.
4 Hacker News mentions · 2018–2026