Ørsted's needle (1820): the first force ever seen to act sideways [video]
By wallaceeh · 2026-09-15 · 2 points · 1 comments
https://www.youtube.com/watch?v=_uALsDd9DUY
By wallaceeh · 2 points · 1 comments · on Hacker News, read on BetterNews.
Open the full discussion on BetterNews