Halley undertook sustained observations of the Moon because its motion was important to finding longitude at sea. The measurements helped reduce uncertainties in celestial reference positions.
1721 ยท Ireland ยท Humanities ยท Philosophy ยท George Berkley
De Motu
Publication of "De Motu"
1721 ยท Ireland ยท Humanities ยท Philosophy ยท George Berkley
Berkeley Interprets Forces Instrumentally
Berkeley treated certain mechanical terms as useful for calculation without requiring them to name hidden physical entities. This position made De Motu important to later debates about scientific explanation.
1721 ยท Ireland ยท Humanities ยท Philosophy ยท George Berkley
Berkeley Questions Absolute Motion
In De Motu Berkeley criticized treating absolute space and motion as straightforward objects of experience. His discussion addressed foundational assumptions in the physical theories of his era.
1721 ยท Italy ยท Fano ยท Government ยท Government of Italy ยท Clement XIII
Governor
Appointed Governor of Fano
1721 ยท Italy ยท Religion ยท Roman Catholic Church ยท Innocent XIII
Pope
Appointed Pope, Michelangelo dei Conti
1721 ยท Italy ยท Religion ยท Roman Catholic Church ยท Innocent XIII
Succession
Invests Charles VI with sovereignty over Naples
1721 ยท Russia ยท House ยท House of Romanov ยท Peter I the Great
Succession
Succeeds as Tsar of Russia
1721 ยท Russia ยท Nystad ยท Warfare ยท Great Northern War ยท Peter I the Great
Treaty of Nystad
Concludes peace with Charles XII, acquires Livonia, Estonia, Ingria & part of Karelia
1721 ยท Russia ยท Nystadt ยท Warfare ยท Great Northern War ยท Peter I the Great
Treaty of Nystadt
Concludes peace with Charles XII, acquires Livonia, Estonia, Ingria & part of Karelia