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arXiv · 1102.2006

High resolution stopwatch for cents

Zoltan Gingl·Katalin Kopasz
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Abstract

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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Zoltan Gingl, Katalin Kopasz. 2011-02-09. High resolution stopwatch for cents. https://doi.org/10.1088/0031-9120%2F46%2F4%2F009

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