This was written by my undergrad advisor and his PhD student (who is now also a prof at BYU). I think it was partially funded originally by an exploratory gran

This was written by my undergrad advisor and his PhD student (who is now also a prof at BYU). I think it was partially funded originally by an exploratory grant from the NSF. The website has editions back to 2008, but there were earlier ones--we used it when I took Optics in 2007. Students were involved in developing the material, by contributing to the historical profiles, participating in filmed demonstrations (also on the website), and of course providing feedback. A nice thing about having an open textbook like this is that I can refer to it anywhere, instead of only at the office where my other texts are.