Hacker News Reader

This is phenomenal, does anyone have sources of more physics concepts explained simply?

Scott Aaronson's Quantum Physics is one: http://www.scottaaronson.com/democritus/lec9.html

I want to point out that xkcd's criteria for usable words is a lot better than "four letters or less". There are some really obscure, yet very dense words out there.

Reply on news.ycombinator.com