The tools of Exploration

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by missanis
Last updated 6 years ago

Discipline:
Social Studies
Subject:
Explorers and Discovers

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The tools of Exploration

The astrolabe is a very ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky. Several types of astrolabes have been made. By far the most popular type is the planispheric astrolabe, on which the celestial sphere is projected onto the plane of the equator.

The Tools of Exploration

Biography

Biography

The Compass

The Astrolabe

An instrument whose magnetized metal needle aligns itself with the magnetic fields of the earth. This causes one end of the needle to point north. Mariners used this information to navigate the ship. The Chinese are said to have invented the first compass over 2000 years ago.

Ebony Sextant

Ebony sextant. A very handsome example by H. Limbach of Hull of a sextant with an ebony frame. Ebony was used because of the dense wood's resistance to humidity. The scale and vernier were divided on ivory, or should we now say bone. The design was not successful because the wood tended to split over the long arc of a sextant.

Name : Juan Ponce de LeónOccupation :ExplorerBirth Date : 1460Death Date :1521Place of Birth : Santervás De Campos, SpainPlace of Death : Havana, Cuba


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