New at SubtleTV! Close
What to Watch

Video: Video: Measure the mass of an eyelash with a DIY microbalance

I built a microbalance based on a design by Paul Grohe: http://www.youtube.com/watch?v=n90whRO-ypE It is has a precision of about 5 micrograms, and I measured a single eyelash at about 35 micrograms. The balance is built from an analog panel meter that is controlled by a servo loop which optically monitors the meter's position. Adding mass to the meter's needle requires that the servo loop add more current to maintain the needle's position. This additional current is read, and converted to a mass value.
Applied ScienceEngineeringPornelectronicsScience & Technology

Lola Kirke

Juliet Huddy

WatchESPN

Carl Edwards

Jordan Hankins

Ty Pozzobon Death

Tree Man

Obama Farewell Speech

Altaba

NFL mock draft

Pioneer Cabin tree

Raymond James Stadium

Alabama Vs Clemson

Clemson Tigers

Rodeo Houston 2017

Share current
video
video
stream
Share Playlist
Close
Measure the mass of an eyelash with a DIY microbalance