Corrigendum to “van de Hulst essay: Geometric-phase portrayal of electromagnetic scattering by a three-dimensional object in free space”(Journal of Quantitative Spectroscopy and Radiative Transfer, (2026), 352, C, (109809), (S0022407326000038), 10.1016/j.jqsrt.2026.109809)

Errors in a paper [1] are corrected as follows: •Eqs. (14a)–(14d) require removal of the factor k0−2 from their right sides. The correct equations are: (14a)s0sca(rˆ)=|Fθsca(rˆ)|2+|Fϕsca(rˆ)|2,(14b)s1sca(rˆ)=|Fθsca(rˆ)|2−|Fϕsca(rˆ)|2,(14c)s2sca(rˆ)=−2ReFϕsca(rˆ)Fθsca∗(rˆ),(14d)s3sca(rˆ)=−2ImFϕsca(rˆ)Fθsca∗(rˆ). The error did not affect subsequent equations as well as numerical results.•Eqs. (25a) and (25b) require the replacement of ap by −ap. The correct equations are: (25a)Asmn(1)=−2n(n+1)inapδse−asδsoδm1,(25b)Bsmn(1)=−2n(n+1)in+1asδse+apδsoδm1. The error did not affect subsequent equations as well as numerical results.•The computer program used to calculate several density plots provided in Figs. 2–13 had a negative sign missing in the instructions to calculate ψ̲scas(rˆ) and ψ̲scaa(rˆ). The major effect was an inversion of hot and cold colors in some density plots of Ψscas(rˆ) and Ψscaa(rˆ). Corrected figures are provided here. Discussions on the figures are not affected. Eqs. (14a)–(14d) require removal of the factor k0−2 from their right sides. The correct equations are: (14a)s0sca(rˆ)=|Fθsca(rˆ)|2+|Fϕsca(rˆ)|2,(14b)s1sca(rˆ)=|Fθsca(rˆ)|2−|Fϕsca(rˆ)|2,(14c)s2sca(rˆ)=−2ReFϕsca(rˆ)Fθsca∗(rˆ),(14d)s3sca(rˆ)=−2ImFϕsca(rˆ)Fθsca∗(rˆ). The error did not affect subsequent equations as well as numerical results. Eqs. (25a) and (25b) require the replacement of ap by −ap. The correct equations are: (25a)Asmn(1)=−2n(n+1)inapδse−asδsoδm1,(25b)Bsmn(1)=−2n(n+1)in+1asδse+apδsoδm1. The error did not affect subsequent equations as well as numerical results. The computer program used to calculate several density plots provided in Figs. 2–13 had a negative sign missing in the instructions to calculate ψ̲scas(rˆ) and ψ̲scaa(rˆ). The major effect was an inversion of hot and cold colors in some density plots of Ψscas(rˆ) and Ψscaa(rˆ). Corrected figures are provided here. Discussions on the figures are not affected. Thanks are due to Héctor M. Iga-Buitrón and Tom G. Mackay for alerting me to errors (which I regret). Akhlesh Lakhtakia: Conceptualization, Writing – review & editing.