DIY Microbalance Weighs an Eyelash at About 35 Micrograms
Applied Science · Demo · 8 min · 2014 · YouTube title: Measure the mass of an eyelash with a DIY microbalance
Why it's here
Pointed to as proof that you can weigh micrograms cheaply at home, and as a clear breakdown of how such a scale works.
What it covers
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.