eyleen.lindseys ocean timeline

  • 160


    explanded the orbit of the sun, moon, and planets. called them epicycles.
  • 240


    eratosthenes is credited by Cleomedes On the Circular Motions with having calculated the Earth's circumference around 240 BC, using trigonometry and knowledge of the angle of elevation of the Sun at noon in Alexandria and in the Elephantine Island near Syene.
  • 325


    pytheas sailed across most of northwest europe and also measured the angle between the horizon and the
    North Star (Polaris is located directly above the
    North Pole).
  • 420

    herodotus b.c

    herodotus b.c
    He traveled extensively throughout the Eastern Mediterranean. There, he visited the Black Sea, Babylon, Phoenicia, and Egypt. He is best known for his work entitled Histories. which later got him labelled the father of history.
  • Jan 6, 1300

    the compass rose

    the compass rose
    the compass rose was used to indicate the directions of the winds, but the 32 points of the compass rose come from the directions of the eight major winds, the eight half-winds and the sixteen quarter-winds.
  • Nov 7, 1400

    prince henry the navigator

    prince henry the navigator
    established a marine observatory to
    improve the Portuguese sailing travels.
  • Jan 4, 1513

    ferdinand magellan

    ferdinand magellan
    In 1513 Ferdinand navigated the globe through a passage way at 52° S latitude now called the Straights of Magellan.
  • nuclear submarine

    nuclear submarine
    helped view the the ocean from the bottom up, also helped explore the undersea way easier.
  • James cook

    James cook
    cook was known for saving the health of his crew
    by requiring them to drink Lime Juice regularly
    preventing scurvy and developing a chronometer
    which is used to determine longitudinal locations.
  • Benjamin Franklin

    Benjamin Franklin
    1777 published the first map of the Gulf Stream.
  • matthew maury

    matthew maury
    US Navy officer who made
    Navel Charts that when
    used, logged, and allowed sailors to
    avoid catastrophic weather conditions,
    currents, and tides.
  • sonar

    sonar is the use of an echo and the sound waves bounce off nearby objects, and some of them reflect back to the object that made the noise.
  • Charles Darwin

    Charles Darwin
    published his books Natural Selection and The Origin of the Species. investigated the whole of nature leading him to make one of the most outstanding contributions to biology.
  • challenger Expedition

    challenger Expedition
    First large-scale voyage that increased knowledge of the
    distribution of life in the ocean and of
    the chemical and physical properties of
    the ocean.
  • bathosphere

    a spherical deep-sea submersible which is unpowered and is lowered into the ocean on a cable.