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

2026/05/05 by Sanjoy Kumar Pal, Soumen Sarkar, Pradipta Panchadhyayee · 1 voice
Physics and Astronomy · #physics.ed-ph

paper · pdf · doi:10.1119/5.0207814

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.

Citations

• LiDAR based determination of spring constant using smartphones
• Determination of the magnetic moment of a magnet by letting it fall through a conducting pipe

Discussions

• Sanjoy Kumar Pal, Soumen Sarkar, Pradipta Panchadhyayee: A smartphone-based simple method for determination of the free space permeability https://arxiv.org/abs/2605.03293 https://arxiv.org/pdf/2605.0 [bsky, 0 points, 0 comments]

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