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Longitude calculations can be simplified using a clock is set to the local time of a starting point whose longitude is known, transporting it to a new location, and using it for astronomical observations. The longitude of the new location can be determined by comparing the difference of local mean time and the time of the transported clock.
<noinclude>[[Category:Family tree templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character. This category holds templates that visually depict family trees.
Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time is a 1995 best-selling book by Dava Sobel about John Harrison, an 18th-century clockmaker who created the first clock (chronometer) sufficiently accurate to be used to determine longitude at sea—an important development in navigation.
Family tree showing the relationship of each person to the orange person, including cousins and gene share. A family tree, also called a genealogy or a pedigree chart, is a chart representing family relationships in a conventional tree structure. More detailed family trees, used in medicine and social work, are known as genograms.
A similar use of {} can be used to construct a top down tree, but there is a template ({{Ahnentafel-chart}}) that can be used to display bottom-up or top-down family trees using {} that is simpler to construct:
John Harrison was born in Foulby in the West Riding of Yorkshire, the first of five children in his family. [3] His stepfather worked as a carpenter at the nearby Nostell Priory estate. A house on the site of what may have been the family home bears a blue plaque. [4] Around 1700, the Harrison family moved to the Lincolnshire village of Barrow ...
In the early 1700s, a series of maritime disasters occurred, including the wrecking of a squadron of naval vessels on the Isles of Scilly in 1707. [7] Around the same time, mathematician Thomas Axe decreed in his will that a £1,000 prize be awarded for promising research into finding "true longitude" and that annual sums be paid to scholars involved in making corrected world maps.
This is an index of family trees on the English Wikipedia. It includes noble, politically important, and royal families as well as fictional families and thematic diagrams. This list is organized according to alphabetical order.