Estimating π using an electrical circuit
Richard Opio Ocaya · European Journal of Physics · 2016
Abstract The constant pi, or π , is one of the oldest and most recognizable irrational constants. It was known from the earliest days of mathematics and the sciences. Over the ages, many methods of varying complexity have been used to estimate π . This article presents a novel experimental method to estimate π using direct, digital voltmeter measurements on a simple precision full-wave rectifier circuit. We discuss the method in the context of error encroachment, and suggest the possibility to estimate total harmonic distortion simply. The experiment is repeatable and of value to the undergraduate physics and electronics laboratory, while adding to a celebration of π .