Nobel laureate Hans Bethe, one of the giants of 20th-century physics, was present at the birth of the atomic age. He worked on the Manhattan Project and.rubbed elbows with the likes of Niels Bohr, Enrico Fermi and Albert Einstein.
In 1999, at age 93 Bethe gave this series of lectures about quantum physics to fellow residents of the Kendal of Ithaca retirement community. Because he was speaking to a lay audience, he kept the concepts simple and relatively math-free. Listening to his soft, German-accented English, is like touching a piece of history. Along with his discussion of quantum theory, he relates anecdotes about his fellow physicists and puts their discoveries in context.
Technical note: although these are streaming lectures, you can listen to them on an MP3 player if you use a download manager like Unplug, which works with the Firefox web browser.