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1685 (MDCLXXXV) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1685th year of the Common Era (CE) and Anno Domini (AD) designations, the 685th year of the 2nd millennium, the 85th year of the 17th century, and the 6th year of the 1680s decade. As of the start of 1685, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1610 (MDCX) was a common year starting on Friday of the Gregorian calendar and a common year starting on Monday of the Julian calendar, the 1610th year of the Common Era (CE) and Anno Domini (AD) designations, the 610th year of the 2nd millennium, the 10th year of the 17th century, and the 1st year of the 1610s decade. As of the start of 1610, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1631 (MDCXXXI) was a common year starting on Wednesday of the Gregorian calendar and a common year starting on Saturday of the Julian calendar, the 1631st year of the Common Era (CE) and Anno Domini (AD) designations, the 631st year of the 2nd millennium, the 31st year of the 17th century, and the 2nd year of the 1630s decade. As of the start of 1631, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
Squaring the circle is a problem in geometry first proposed in Greek mathematics. It is the challenge of constructing a square with the area of a circle by using only a finite number of steps with a compass and straightedge. The difficulty of the problem raised the question of whether specified axioms of Euclidean geometry concerning the existence of lines and circles implied the existence of such a square.
The year 1878 in science and technology involved many significant events, listed below.
The year 1761 in science and technology involved some significant events, listed below.
The year 1678 in science and technology involved some significant events.
The year 1610 in science and technology involved some significant events.
Lubicz is a Polish nobility coat of arms.
Kochanski or Kochański is a surname. It may refer to:
Adam Adamandy KochańskiIPA: [ˈadam adaˈmandɨ kɔˈxaj̃ski](listen) was a Polish mathematician, physicist, clock-maker, pedagogue and librarian. He was the Court Mathematician of John III Sobieski.
Events from the year 1685 in art.
Events from the 1610s in England.
The year 1540 in science and technology included a number of events, some of which are listed here.
Events from the year 1605 in France
Events from the year 1592 in France
Events from the year 1685 in France
Events from the year 1603 in France
Events from the year 1607 in France
References
- ↑ Kochański, Adam Adamandy (1685). "Observationes Cyclometricae ad facilitandam Praxin accomodatae". Acta Eruditorum . 4: 394–398.
- ↑ "The Story of Dentistry – Timeline". British Dental Association. Archived from the original on 2012-03-09. Retrieved 2012-02-09.