Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

In theory, you could produce this in the medieval era if you had mercury.

https://en.m.wikipedia.org/wiki/Sprengel_pump

Just imagine some society discovering superconductivity on the cusp of even starting a technological revolution.




Consider applying for YC's Fall 2025 batch! Applications are open till Aug 4

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: