Design of an experimental scheme for measuring the linear thermal&nbsp; expansion coefficient of metals via single-slit diffraction using Phyphox

Kexin LI, Zhenghan JIAO, Shiqi DAN, Honglin ZHANG, Pingchuan XU, Zhijiao ZHANG, Yongqiang LI

doi:10.16854/j.cnki.1000-0712.240577

2025 , Vol. 44 >Issue 11: 6

DOI: https://doi.org/10.16854/j.cnki.1000-0712.240577

Design of an experimental scheme for measuring the linear thermal expansion coefficient of metals via single-slit diffraction using Phyphox

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(School of Physics and Astronomy, China West Normal University, Nanchong, Sichuan, 637009)

Received date: 2024-12-11

Revised date: 2025-01-23

Online published: 2026-01-19

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Abstract

To optimize the measurement of metal′s linear expansion coefficient, a lever system combines Fraunhofer single-slit diffraction with thermal expansion. The small expansion is reflected in diffraction fringe changes, while Phyphox collects real-time data, enabling precise measurements. This setup improves accuracy, reduces costs, and enhances students′ innovation and practical skills.

Key words： metal expansion coefficient; single-slit diffraction; Phyphox; physics experiment.

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Kexin LI, Zhenghan JIAO, Shiqi DAN, Honglin ZHANG, Pingchuan XU, Zhijiao ZHANG, Yongqiang LI . Design of an experimental scheme for measuring the linear thermal expansion coefficient of metals via single-slit diffraction using Phyphox[J]. College Physics, 2025 , 44(11) : 6 . DOI: 10.16854/j.cnki.1000-0712.240577

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