Benjamin Crowell teaches physics at Fullerton College, a community college in southern California. he comes fully equipped with a PhD in physics from Yale, but I more fondly remember my undergraduate years at UC Berkeley.
Source: lightandmatter.com
You are reading the first volume of the Light and Matter series of introductory physics textbooks, and as implied by its title, the story line of the series is built around light and matter: how they behave, how they are different from each other, and, at the end of the story, how they turn out to be similar in some very bizarre ways.
This is a set of lecture notes for the course Relativity for Poets at Fullerton College. It's a nonmathematical presentation of Einstein's theories of special and general relativity, including a brief treatment of cosmology.
