free university lectures - computer science, mathematics, physics
free university lectures online - computer science, mathematics, physics and more 
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The Physical Sciences Resource Center
The PSRC is a collection of resources for physics, astronomy, and physical science education. It is a part of the National Science Digital Library. 
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Physics Help and Math Help - Physics Forums
Scientific physics forums for professionals and students to discuss serious issues and topics regarding physics in theory, practice, study and reality. Students can also find help for homework and career perspectives 
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