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  2. Historic Triangle - Wikipedia

    en.wikipedia.org/wiki/Historic_Triangle

    The Historic Triangle includes three historic colonial communities located on the Virginia Peninsula, bounded by the York River on the north and James River on the south. The three points that form the triangle are Jamestown, Colonial Williamsburg, and Yorktown. They feature many restored attractions and are linked by the Colonial Parkway in ...

  3. Sothic cycle - Wikipedia

    en.wikipedia.org/wiki/Sothic_cycle

    The Sothic cycle or Canicular period is a period of 1,461 Egyptian civil years of 365 days each or 1,460 Julian years averaging 365+1⁄4 days each. During a Sothic cycle, the 365-day year loses enough time that the start of its year once again coincides with the heliacal rising of the star Sirius (Ancient Egyptian: spdt or Sopdet, 'Triangle ...

  4. Jamestown, Virginia - Wikipedia

    en.wikipedia.org/wiki/Jamestown,_Virginia

    The Jamestown[a] settlement in the Colony of Virginia was the first permanent English settlement in the Americas. It was located on the northeast bank of the James River, about 2.5 mi (4 km) southwest of present-day Williamsburg. [1] It was established by the London Company as "James Fort" on May 4, 1607 O.S. (May 14, 1607 N.S.), [2] and ...

  5. Triangulation (surveying) - Wikipedia

    en.wikipedia.org/wiki/Triangulation_(surveying)

    In surveying, triangulation is the process of determining the location of a point by measuring only angles to it from known points at either end of a fixed baseline by using trigonometry, rather than measuring distances to the point directly as in trilateration. The point can then be fixed as the third point of a triangle with one known side ...

  6. Great conjunction - Wikipedia

    en.wikipedia.org/wiki/Great_conjunction

    This is about 52 days less than 20 years, but in practice, Earth's orbit size can cause great conjunctions to reoccur anytime between 18 years 10 months and 20 years 8 months after the previous one. (See table below.) Since the equivalent periods of other naked-eye planet pairs are all under 900 days, this makes great conjunctions the rarest.

  7. Polynesian navigation - Wikipedia

    en.wikipedia.org/wiki/Polynesian_navigation

    The Polynesian triangle. Between about 3000 and 1000 BC speakers of Austronesian languages spread through the islands of Southeast Asia – most likely starting out from Taiwan, [9] as tribes whose natives were thought to have previously arrived from mainland South China about 8000 years ago – into the edges of western Micronesia and on into Melanesia, through the Philippines and Indonesia.

  8. Colonial Parkway - Wikipedia

    en.wikipedia.org/wiki/Colonial_Parkway

    Colonial Parkway is a 23-mile (37 km) scenic parkway linking the three points of Virginia's Historic Triangle, Jamestown, Williamsburg, and Yorktown. It is part of the National Park Service's Colonial National Historical Park. Virginia's official state classification for the parkway is State Route 90003. [ 1 ]

  9. Accident triangle - Wikipedia

    en.wikipedia.org/wiki/Accident_triangle

    The accident triangle, also known as Heinrich's triangle or Bird's triangle, is a theory of industrial accident prevention. It shows a relationship between serious accidents, minor accidents and near misses. This idea proposes that if the number of minor accidents is reduced then there will be a corresponding fall in the number of serious ...