SCIENCE!!!
No really. We can learn more about science, physics specifically, for free. The California Institute of Technology, home to NASA’s Jet Propulsion Laboratory, is opening up a wealth of lectures from Richard Feynman on a variety of subjects. Pages and pages of lectures, and related scientific materials. The first section alone is broken into 52 chapters dealing with subjects like relativity, light, color, time, quantum theory, and sound. Enough reading material to keep us science-y geeks busy for weeks. I’ve already started chewing into his lectures on acoustics… Gonna learn me some sound…
Did I mention free? It’s free.
The Feynman Lectures on Physics
(pic courtesy CalTech, via Reddit)