Open Yale Courses

Yale University is offering a number of freely available online courses though its Open Yale Courses initiative. The courses cover topics such as Biology, Chemistry, Physics, Political Science, Sociology, and Economics. A list of the courses is available here and they are also available on YouTube.

Open Yale Courses. Source.

Details . Arabic Version

Nova: Fabric of the Cosmos

Acclaimed physicist Brian Greene presents, The Fabric of the Cosmos, an amazing 4-part Nova series that tries to explain modern physics for the layman, starting from Einstein's special relativity theory and up to quantum mechanics and the super string theory.

The Fabric of the Cosmos. Source.

The series is available to watch for free at PBS Nova.