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.
Publisher: Caltech / The Feynman Lectures Website (online edition).
Publisher: Caltech / The Feynman Lectures Website (online edition).