Keebaugh, Christof; Marshman, Emily; Singh, Chandralekha Investigating and addressing student difficulties with a good basis for finding perturbative corrections in the context of degenerate perturbation theory. (English) Zbl 1396.81092 Eur. J. Phys. 39, No. 5, Article ID 055701, 22 p. (2018). MSC: 81Q15 97A50 PDFBibTeX XMLCite \textit{C. Keebaugh} et al., Eur. J. Phys. 39, No. 5, Article ID 055701, 22 p. (2018; Zbl 1396.81092) Full Text: DOI
Keebaugh, Christof; Marshman, Emily; Singh, Chandralekha Investigating and addressing student difficulties with the corrections to the energies of the hydrogen atom for the strong and weak field Zeeman effect. (English) Zbl 1396.81223 Eur. J. Phys. 39, No. 4, Article ID 045701, 25 p. (2018). MSC: 81V45 78A30 81Q15 97M50 PDFBibTeX XMLCite \textit{C. Keebaugh} et al., Eur. J. Phys. 39, No. 4, Article ID 045701, 25 p. (2018; Zbl 1396.81223) Full Text: DOI