2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87528Section 7 of Einstein's 1905 electrodynamics paper gives frequency-shift and aberration formulae that together describe an elongated ellipsoidal wavefront. A Lorentz contraction of this ellipsoid solves most (but not all) of the associated relativistic problems.Approximately 2300 words, with three figures. Nine GIFs, including equations. Submitted to Am.J.Phys. on 03/Jun/98; eric_baird@compuserve.comPhysics Educationtext