QIN Shaohan,MA Yuhan

• 1:School of Physics and Astronomy
• 2: Beijing Normal University
• 3:The Experimental High School Attached to Beijing Normal University
• 4:Harvard College

摘要(Abstract)：

The Zeeman effect, a fundamental quantum phenomenon, demonstrates the interaction between magnetic fields and atomic systems. While precise spectroscopic measurements of this effect have advanced significantly, there remains a lack of simple, visually accessible demonstration for educational purposes. Here, we present a low-cost experiment that allows for direct visual observation of the Zeeman effect. Our setup involves a flame containing sodium(from table salt) placed in front of a sodium vapor lamp. When a magnetic field is applied to the flame, the shadow cast by the flame noticeably lightens, providing a clear, naked-eye demonstration of the Zeeman effect. Furthermore, we conduct two quantitative experiments using this setup, examining the effects of varying magnetic field strength and sodium concentration. This innovative approach not only enriches the experimental demonstration for teaching atomic physics at undergraduate and high school levels but also provides an open platform for students to explore the Zeeman effect through hands-on experience.

关键词(KeyWords)：

Abstract:

Keywords:

基金项目(Foundation): the National Natural Science Foundation of China for support under grant No.12305037;; the Fundamental Research Funds for the Central Universities under grant No.2023NTST017

作者(Author): QIN Shaohan,MA Yuhan

DOI: 10.27024/j.wlygc.2025.12.16.06

参考文献(References)：

• [1] BAKKER C.Fifty years zeeman effect[J].Physica,1946,12:555.
• [2] SRIVASTAVA A,SIDLER M,ALLAIN A V,et al.Valley zeeman effect in elementary optical excitations of monolayer wse 2[J].Nature Physics,2015,11:141.
• [3] SUN Z,CAO Z,CUI J,et al.Large zeeman splitting induced anomalous hall effect in zrte5[J].npj Quantum Materials,2020,5:36.
• [4] CRUTCHER R M,KEMBALL A J.Review of zeeman effect observations of regions of star formation[J].Frontiers in Astronomy and Space Sciences,2019,6:66.
• [5] KOCHUKHOV O.Magnetic fields of m dwarfs[J].The Astronomy and Astrophysics Review,2021,29:1.
• [6] TAYLOR A S,HYDE A R,BATISHCHEV O V.Zeeman effect experiment with high-resolution spectroscopy for advanced physics laboratory[J].American Journal of Physics,2017,85:565.
• [7] dos Santos M C,Porcher P,Krupa J,et al.Absorption and zeeman effect in-doped:Measurements and simulation[J].Journal of Physics:Condensed Matter,1996,8:4643.
• [8] JACKSON D A,KUHN H.The hyperfine structure of the zeeman components of the resonance lines of sodium[J].Proceedings of the Royal Society of London.Series A.Mathematical and Physical Sciences,1938,167:205.
• [9] FOOT C J.Atomic physics,Vol.7[M].Oxford University Press,2005.
• [10] GRIBL A,PETRINOVI■ robust method for Gaussian profile estimation in the case of overlapping objects[J].IEEE Access,2021,9:21071.