High resolution stopwatch for cents

Details High resolution stopwatch for cents High resolution stopwatch for cents

2011-02-09

arxiv.org/abs/1102.2006v1

Phys.Educ.46:430-432,2011

Physics

Popular Physics

Scientific paper

10.1088/0031-9120/46/4/009

A very low-cost, easy-to-make stopwatch is presented to support various
experiments in mechanics. The high-resolution stopwatch is based on two
photodetectors connected directly to the microphone input of the sound card. A
dedicated free open-source software has been developed and made available to
download. The efficiency is demonstrated by a free fall experiment.

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