Meetings 2024 To find out more about the group, email Mike Witt: mike (at) physicscafe (dot) org Upcoming October 6: Principia Talk 6 (History: more Galileo, and Descartes) Past September 29: Principia Talk 5 (History: Horrocks and more Galileo) September 22: Principia Talk 4 (History: Kepler and Galileo) September 15: Principia Talk 3 (History: More Kepler) September 8: Principia Talk 2 (History: Tycho and Kepler) August 11: Principia Talk 1 (History: ancients through Tycho) 2023 Meetings
