The optical mouse for harmonic oscillator experimentation

Abstract

The optical mouse is an extremely cost-effective displacement sensor. Here we describe the use of an optical mouse in an experiment to record position as a function of time for a simple mechanical oscillator. The recorded data correspond closely to that expected for damped harmonic oscillations. These measurements can be made without the use of cumbersome attachments. The optical mouse is also advantageous in obviating concern about the integrity of electrical contact points and the deleterious effects of wear and of dirt accumulation on moving parts. © 2005 American Association of Physics Teachers.