R.I.P. Hans Bethe

One of the most famous physicists of the 20th century died today. Hans Bethe was one of the great theorists of modern times, worked on the Manhattan Project, and afterwards became a famous proponent of disarmament. I know about him mainly from the books I've read on Richard Feynman, whom he worked with on the Manhattan Project and collaborated with on numerous projects. If you are curious about Hans Bethe, L.A. times did an obituary on him in today's issue.