Online text: www.feynmanlectures.caltech.edu/I_28.html
Chapter 28 of Volume I. The book byline credits Richard Feynman, Robert B. Leighton and Matthew Sands; Caltech hosts the online edition.
Cited passages: Feynman, Leighton and Sands, Electromagnetic Radiation, §§28-2–28-3: transverse acceleration and dipole geometry.
Chapter of The Feynman Lectures on Physics, Volume I by Richard Feynman and others. The existing whole-book author credits apply; no separate chapter byline or online-edition publication date is established. Caltech hosts the online edition.
Online text: www.feynmanlectures.caltech.edu/I_31.html
Cited passage: §31–1, equations (31.1)–(31.5), driven charges, fixed boundary frequency and wavelength in a medium. The microscopic approximation assumes an index near unity.
The Feynman Lectures on Physics, Volume II by Richard Feynman and others Created 2026-10-13 Updated 2026-10-18
Publisher: Caltech / The Feynman Lectures Website (online edition).
Additional cited passages: II.14–6, equations (14.37)–(14.38): volume-to-wire conversion; II.14–7, equations (14.39)–(14.43): volume law, displacement convention and cross-product order; II.14–5, equations (14.33)–(14.36): loop magnetic moment and dipole field. Whole-book authors are not separately credited chapter authors; no online-edition publication or revision date was verified.
Additional cited passages: II.13–4, equations (13.12)–(13.13) and subsequent steady-source and closed-circuit discussion; II.13–5, equations (13.17)–(13.18) and internal-current explanation of magnetic matter. Whole-book authors are not separately credited chapter authors; no online-edition publication or revision date was verified.
Additional online chapters: www.feynmanlectures.caltech.edu/II_02.html and www.feynmanlectures.caltech.edu/II_12.html
Additional cited passages: II.2–7, Second derivatives of vector fields, equations (2.52)–(2.54), the Laplacian and the rectangular-component statement after (2.54); II.2–8, Pitfalls, equation (2.60) and final coordinate-system caution. II.12–4, equations (12.19)–(12.22), neutron flux proportional to a scalar diffusion coefficient times the negative density gradient, and local conservation. Equation (12.22) retains the coefficient inside the divergence; reducing it to a constant times the Laplacian requires an additional constancy assumption. Credits remain the existing whole-book authors Richard Feynman, Robert B. Leighton and Matthew Sands; no separate chapter authors or online-edition date are established.
Publisher: Caltech / The Feynman Lectures Website (online edition).