Solution
= Solution
\b[Covered by the official notes:] charge field-line sketches at rest and in motion, field anisotropy, and relation to the two spring orientations (PDF pp. 13–14; handwritten pp. 8–9).<Symmetry and Relativity 2011 Exam Solution Notes>[PDF pp. 13–14; handwritten pp. 8–9: charge field-line sketches at rest and in motion, field anisotropy, and relation to the two spring orientations]{ref}