A smartphone-based simple method for determination of the free space permeability

TL;DR

This paper presents a novel, smartphone-based method to accurately determine free space permeability by analyzing the terminal velocity of a magnet falling through a conducting pipe using a magnetic sensor.

Contribution

It introduces a simple, precise technique leveraging smartphone sensors to measure free space permeability, enhancing accessibility and accuracy in magnetic property determination.

Findings

Method achieves high accuracy and precision.

Uses smartphone magnetic sensors and video analysis.

Provides a cost-effective alternative to traditional methods.

Abstract

A simple and novel method is designed to determine the free space permeability. This value is computed from the expression of the terminal velocity of a magnet falling through a conducting pipe using the magnetic sensor of a smartphone and a video player. This method deserves its importance because of the accuracy and precision of the results.