Maybe a solution is to provide a public "if you love this book, you'd like these ones by different authors" - that way, it facilitates discovery without having to incur too much personalization.
Mirror reflection of a stronger electron beam in a magnetic field which converges to the right. Note that the guiding center (axis of spiral) of the reflected beam does not coincide with that of the incident. This is due to the gradient and curvature drift in a nonuniform field.
This loopy one above from Prof. Reiner Stenzel's page on single particle motion in electric and magnetic fields is fascinating! Thanks for the link, PlasmaGryphon!
After seeing the inside of a real submarine, I'd say that's a VERY good thing!