USA HISTORY

Detailed explanation-1: -The astrolabe was used to determine latitude by measuring the angle between the horizon and Polaris, also called the North Star, the Pole Star, or Stella Maris (Star of the Sea).

Detailed explanation-2: -Astrolabe-The astrolabe is a circular device, often made of brass or wood, used to measure latitude. This Arabic device was created in the 2nd century and perfected over time. To measure latitude, sailors would point the astrolabe towards the sun during the day and the North Star at night.

Detailed explanation-3: -Watching the Sun One of the simplest methods for determining a ship’s direction was to watch the movement of the sun across the sky. Sailors used the position of the sun as it moved from east to west to guide their route. At noon, they could determine north and south by the shadows the sun cast.

Detailed explanation-4: -Astrolabe. The astrolabe was an inclinometer used to determine the latitude of a ship at sea by measuring the sun’s noon altitude (declination) or the meridian altitude of a star of known declination.

Detailed explanation-5: -By measuring the distance of the sun and stars above the horizon, the astrolabe helped determine latitude, an important tool in navigation. Another tool, the magnetic compass, which had been invented in the twelfth century, was improved upon during the Renaissance.