in 1656 Christian Huygens invented what type of timekeeper?
in 1656 Christian Huygens invented what type of timekeeper? Pendulum clock
in 1656 Christian Huygens invented what type of timekeeper? Pendulum clock
July 30 in History 762 – Baghdad is founded. 1419 – First Defenestration of Prague: A crowd of radical Hussites kill seven members of the Prague city council. 1502 – Christopher Columbus lands at Guanaja in the Bay Islands off the coast of Honduras during his fourth voyage. 1609 – Beaver Wars: At Ticonderoga (now Crown Point, New York), Samuel de Champlain shoots and kills…
July 28 in History 1364 – Troops of the Republic of Pisa and the Republic of Florence clash in the Battle of Cascina. 1540 – Thomas Cromwell is executed at the order of Henry VIII of England on charges of treason. Henry marries his fifth wife, Catherine Howard, on the same day. 1571 –…
July 27 in History 1054 – Siward, Earl of Northumbria, invades Scotland and defeats Macbeth, King of Scotland somewhere north of the Firth of Forth. 1189 – Friedrich Barbarossa arrives at Niš, the capital of Serbian King Stefan Nemanja, during the Third Crusade. 1202 – Georgian–Seljuk wars: At the Battle of Basian the Kingdom of Georgia defeats the Sultanate…
“Mordad 5th”—day 129th in the Iranian official calendar (236 days – 237 days in leap years – till the end of the year) July 26 in History 657 – First Fitna: In the Battle of Siffin, troops led by Ali ibn Abu Talib clash with those led…
July 21 in History 356 BC – The Temple of Artemis in Ephesus, one of the Seven Wonders of the World, is destroyed by arson. 230 – Pope Pontian succeeds Urban I as the eighteenth pope. 285 – Diocletian appoints Maximian as Caesar and co-ruler. 365 – The 365 Crete earthquake affects the Greek island of Crete with a maximum Mercalli intensity…
July 5 in History 328 – The official opening of Constantine’s Bridge built over the Danube between Sucidava (Corabia, Romania) and Oescus (Gigen, Bulgaria) by the Roman architect Theophilus Patricius. 1316 – The Burgundian and Majorcan claimants of the Principality of Achaea meet in the Battle of Manolada. 1594 – Portuguese forces under the command of Pedro Lopes de Sousa begin an unsuccessful invasion of the Kingdom…
The Aphelion, the point in the year when the Earth is farthest from the Sun, occurs around this date. July 4 in History 362 BC – Battle of Mantinea: The Thebans, led by Epaminondas, defeated the Spartans. 414 – Emperor Theodosius II, age 13, yields power to his…
This day is the midpoint of a common year because there are 182 days before and 182 days after it in common years, and 183 before and 182 after in leap years. The exact time of the middle of the…
It is the last day of the first half of the year. The end of this day marks the halfway point of a leap year. It also falls on the same day of the week as New Year’s Day in a leap year.…