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- Algebra https://www.feynmanlectures.caltech.edu/I_22.html 78 comments
- Feynman's Messenger Lectures (1964) https://www.feynmanlectures.caltech.edu/messenger.html 78 comments
- Feynman Lectures on Physics (1964) https://www.feynmanlectures.caltech.edu/ 67 comments
- Probability (1963) https://www.feynmanlectures.caltech.edu/I_06.html#Ch6-F2 185 comments
- The Feynman Lectures on Physics Audio Collection https://www.feynmanlectures.caltech.edu/flptapes.html 98 comments
- The Feynman Lectures on Physics: The Principle of Least Action (1963) http://www.feynmanlectures.caltech.edu/II_19.html 20 comments
- The Feynman Lectures on Physics: Algebra (1963) http://www.feynmanlectures.caltech.edu/I_22.html 40 comments
- The Feynman Lectures on Physics now free http://www.feynmanlectures.caltech.edu/ 27 comments
- The Feynman Lectures on Physics (2013) http://www.feynmanlectures.caltech.edu 38 comments
- The Feynman Lectures on Physics are free online http://www.feynmanlectures.caltech.edu/ 20 comments
- Feynman Lectures on Physics now free online http://www.feynmanlectures.caltech.edu/ 93 comments
- The Feynman Lectures on Physics, Volume II http://www.feynmanlectures.caltech.edu/II_toc.html 22 comments
- The Feynman Lectures on Physics, Volume III http://www.feynmanlectures.caltech.edu/III_toc.html 21 comments
- The Feynman Lectures on Physics, Volume I http://www.feynmanlectures.caltech.edu/I_toc.html 112 comments
- the Feynman Lectures on Physics for Free: All of Undergrad Physics Distilled beautifully in an interactive 3 volume book https://www.feynmanlectures.caltech.edu/ 11 comments internetisbeautiful
- Richard Feynman's 1961-64 Caltech Introductory Physics lectures are available for online listening: https://www.feynmanlectures.caltech.edu/flptapes.html 4 comments science
- Audio recordings of Richard P. Feynman's Physics Lectures https://www.feynmanlectures.caltech.edu/flptapes.html 6 comments science
- Can someone please help me understand Feynman’s explanation of reversible and non-reversible machines regarding perpetual motion? Link in text. http://www.feynmanlectures.caltech.edu/I_04.html 5 comments askscience
- The Feynman Lectures on Physics http://www.feynmanlectures.caltech.edu/ 50 comments books
- The Feynman Lectures on Physics - free http://www.feynmanlectures.caltech.edu/ 10 comments science
- The Feynman Lectures have been made freely available online by caltech! http://www.feynmanlectures.caltech.edu/ 3 comments science
- Feynman explains why philosophy can't answer empirical questions - "if we have a set of “strange” ideas ... whether we like them or do not like them is an irrelevant question. The only relevant question is whether the ideas are consistent with what is found experimentally." http://www.feynmanlectures.caltech.edu/i_16.html 202 comments philosophy
- The Feynman Lectures on Physics, Volume I (in HTML format) http://www.feynmanlectures.caltech.edu/i_toc.html 27 comments science