One of the most exciting scientific adventures of all time is the search for the ultimate nature of physical reality, a hunt that in the past century has yielded such breakthroughs as Einstein's theory of relativity and quantum mechanics, two theories that radically altered our picture of space, time, gravity, and the fundamental building blocks of matter.
These are full 6 to 10 week courses taught by some of the brightest professors in the world on campus at Stanford University. These classes contain the core curriculum on video, with supplemental info such as textbooks, quizzes, and knowledge bases on pdf files.