This scooter was built on the small budget of a grad student with a family. The total cost was under $300, over an order of magnitude cheaper than the real Segway. Update – 25 Sep 2013 I did some work over the last year for a power-tool company who contacted … Continue Reading ››
The science data for our torsion-balance experiments is collected by measuring the rotation of the pendulum using laser autocollimators. In these autocollimators, light from a laser diode is collimated by a lens, reflected off a mirror on the pendulum, refocused by the original collimating lens, and directed onto a position-sensitive photodetector by a … Continue … Continue reading A device to measure picoradians
