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  2. Bedford Level experiment - Wikipedia

    en.wikipedia.org/wiki/Bedford_Level_experiment

    The Old Bedford River, photographed from the bridge at Welney, Norfolk (2008); the camera is looking downstream, south-west of the bridge. The Bedford Level experiment was a series of observations carried out along a 6-mile (10 km) length of the Old Bedford River on the Bedford Level of the Cambridgeshire Fens in the United Kingdom during the 19th and early 20th centuries to deny the curvature ...

  3. Ninth grade - Wikipedia

    en.wikipedia.org/wiki/Ninth_grade

    In the social studies curriculum, there are a variety of different courses that may be offered depending on school district. For example students may take a geography class, a government class, or a world history class. [54] In the science curriculum, ninth grade students are required, in most areas, to take biology.

  4. Tilly Smith - Wikipedia

    en.wikipedia.org/wiki/Tilly_Smith

    Smith learned about tsunamis in a geography lesson, [4] [5] two weeks before the tsunami, from her teacher Andrew Kearney at Danes Hill School. [ 6 ] [ 7 ] [ 8 ] Specifically, Smith recalled watching black-and-white footage in class of the tsunami resulting from the 1946 Aleutian Islands earthquake and being taught by Kearney for the warning ...

  5. Marine navigation - Wikipedia

    en.wikipedia.org/wiki/Marine_navigation

    Coastal navigation was practiced since the most ancient times. [2] The biblical account of the great flood, where the Noah's Ark appears, is based both on myths and on the navigational practice of the Mesopotamian civilizations, who from the Sumerians onwards navigated their two rivers (Tigris and Euphrates) and the Persian Gulf.

  6. Navigation - Wikipedia

    en.wikipedia.org/wiki/Navigation

    In the European medieval period, navigation was considered part of the set of seven mechanical arts, none of which were used for long voyages across open ocean. Polynesian navigation is probably the earliest form of open-ocean navigation; it was based on memory and observation recorded on scientific instruments like the Marshall Islands Stick Charts of Ocean Swells.

  7. Geographica - Wikipedia

    en.wikipedia.org/wiki/Geographica

    Title page of the 1620 edition of Isaac Casaubon's Geographica, whose 840 page numbers prefixed by "C" are now used as a standard text reference.. The Geographica (Ancient Greek: Γεωγραφικά, Geōgraphiká; Latin: Geographica or Strabonis Rerum Geographicarum Libri XVII, "Strabo's 17 Books on Geographical Topics") or Geography, is an encyclopedia of geographical knowledge, consisting ...

  8. History of navigation - Wikipedia

    en.wikipedia.org/wiki/History_of_navigation

    Map of the world produced in 1689 by Gerard van Schagen.. The history of navigation, or the history of seafaring, is the art of directing vessels upon the open sea through the establishment of its position and course by means of traditional practice, geometry, astronomy, or special instruments.

  9. Indian Ocean trade - Wikipedia

    en.wikipedia.org/wiki/Indian_Ocean_trade

    Indian Ocean trade has been a key factor in East–West exchanges throughout history. Long-distance maritime trade by Austronesian trade ships and South Asian and Middle Eastern dhows, made it a dynamic zone of interaction between peoples, cultures, and civilizations stretching from Southeast Asia to East and Southeast Africa, and the East Mediterranean in the West, in prehistoric and early ...