We pulled into a parking spot on a side street near the historic downtown. This is a closeup of a mural on the street.
https://github.com/davepinch/pinchy.cc/blob/master/content/camera-roll/2024/06/2024-06-09-mural-in-snohomish.md
The first volume [of The Feyman Lectures on Physics] focuses on mechanics, radiation, and heat, including relativistic effects.
