astrolabe etymology

Etymology

The word "astrolabe" is derived from the Greek words:

  • astro: star
  • lab: to take or grasp

Meaning

An astrolabe is an ancient astronomical instrument used to:

  • Determine the positions of celestial bodies
  • Measure the altitude of stars and planets
  • Calculate time and navigation

Origin

The astrolabe was invented around the late 1st or early 2nd century CE by Apollonius of Perga. However, its design and usage were refined and modified by astronomers in the Islamic world during the 9th and 10th centuries CE.

The astrolabe was widely used throughout the Middle Ages by astronomers, navigators, and astrologers. It was particularly important in Islamic civilization, where it played a crucial role in the development of astronomy and navigation.

The astrolabe was eventually replaced by more accurate and versatile instruments, such as the sextant and the telescope, but it remains an important historical artifact that represents the ingenuity and scientific knowledge of ancient astronomers.

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