
Astrolabe - Wikipedia
It serves as a star chart and physical model of the visible half-dome of the sky. Its various functions also make it an elaborate inclinometer and an analog calculation device capable of …
Astrolabe | Definition, History, & Facts | Britannica
astrolabe, any of a type of early scientific instrument used for reckoning time and for observational purposes. One widely employed variety, the planispheric astrolabe, enabled astronomers to …
ASTROLABE: Free Natal Chart / Horoscope
Astrology: Free Natal Chart (Horoscope) from Astrolabe, the leader in automated birth chart reports, relationship reports, and transit and progressed horoscope reports.
Astrolabe - World History Encyclopedia
Aug 31, 2023 · The astrolabe is an astronomical instrument used from around the 6th century to measure time and position by determining the altitude of heavenly bodies like the Sun and …
A beginner's guide to the astrolabe - BBC Sky at Night Magazine
May 25, 2022 · An astrolabe is an astronomical instrument used since ancient times. It consists of rotating discs and rulers to show the positions of astronomical objects at any given time …
The Astrolabe: A Mathematical Jewel | UC Geography
Any instrument used to measure altitudes above the horizon can be called an astrolabe, although there is a major difference between the classic “planispheric astrolabe” and a “mariner’s …
What Is an Astrolabe and How Was This Tool Used?
Aug 27, 2025 · The astrolabe, a historical scientific instrument, served as an analog calculator for various astronomical problems. This ancient device, whose name means “star-taker” in Greek, …
Astrolabe Definition - AP World History: Modern Key Term
Definition An astrolabe is an ancient astronomical instrument used to measure the altitude of celestial bodies and determine latitude. This tool played a crucial role in navigation and …
Mariner's Astrolabe - Ages of Exploration
As Europeans began traveling farther distances across seas and oceans, they created a version of the astrolabe for maritime travel. Thus, the mariners’ astrolabe was born. It became widely …
Astrolabe - History Tools
Nov 19, 2023 · At its heart, the astrolabe consists of a large circular metal plate called the mater that sits vertically on a stand. Both sides of the plate are etched with calibrated circles, lines, …