The investigation into the accident can be read here
http://history.nasa.gov/rogersrep/genindex.htm
It's very much worth reading, although some of the dialog can be a little dry.
Appendix F ( http://history.nasa.gov/rogersrep/v2appf.htm ) was authored by Richard Feynman and provides a flavour for the rest of the report, if you don't have time to read it all.