High resolution stopwatch for cents
Popular Physics
2011-07-04 v1 Physics Education
Instrumentation and Detectors
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.
Keywords
Cite
@article{arxiv.1102.2006,
title = {High resolution stopwatch for cents},
author = {Zoltan Gingl and Katalin Kopasz},
journal= {arXiv preprint arXiv:1102.2006},
year = {2011}
}