Hacker News new | ask | show | jobs
by dowakin 1173 days ago
Check out explanation by Walter Lewin https://www.youtube.com/watch?v=GhawwXcQsUs
2 comments

I was surprised there was no mention of him in the text. There's more of him on YouTube: https://www.youtube.com/results?search_query=walter+lewin+do...
If I recall correctly, Walter Lewin could also freehand draw perfect circles on the chalkboard