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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.
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.
Template:Family tree of the House of Nassau-den Lek; Template:Family tree of the House of Nassau-Grimhuizen; Template:Family tree of the House of Nassau-Weilburg; Template:Family tree of the House of Nassau-Dillenburg; Template:Family tree of the House of Nassau-Zuylestein; Template:Nehru-Gandhi family tree; Template:Neo-Assyrian family tree
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:
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.
Longitude is given as an angular measurement with 0° at the Prime Meridian, ranging from −180° westward to +180° eastward. The Greek letter λ (lambda) [38] [39] is used to denote the location of a place on Earth east or west of the Prime Meridian. Each degree of longitude is sub-divided into 60 minutes, each of which is divided into 60 ...
The results are often displayed in charts or written as narratives. The field of family history is broader than genealogy, and covers not just lineage but also family and community history and biography. [3] The record of genealogical work may be presented as a "genealogy", a "family history", or a "family tree".
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.