Perhaps even MIT didn’t realize, when they began posting introductory physics lectures online, that the videos would become so popular. Then again, who ever could have predicted the popularity of the Star Wars Kid? Even physics can't explain the phenomenon of internet video popularity, but if it makes more people love physics, I think they'll take it. Here's a sampler of the type of lecture they're showing, featuring Professor Walter Lewin: Professor Lewin is slowly but steadily gaining credibility in the internet realm as a prime source of both info and entertainment. Lewin says he spends 25 hours planning each 45 minute lecture, each of which is packed with fantastic demonstrations and constant reminders of the endless number of everyday places you see physics in action. You can download the lectures for free on iTunes or MIT’s website http://ocw.mit.edu/OcwWeb/Physics/8-03Fall-2004/CourseHome/. When I first heard about MIT putting their physics lectures onli
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