High resolution stopwatch for cents
classification
⚛️ physics.pop-ph
physics.ed-phphysics.ins-det
keywords
stopwatchfreeavailablebeencardcentsconnecteddedicated
read the original 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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