Linked from

The 35 pages that link to Astrolabe, each with the reason it gives.

• Islamic Golden AgeRelated: Its refinement supported astronomy, timekeeping, navigation, and religious practice.

• Age of DiscoveryRelated: Mariners used it to estimate latitude far from familiar coastlines.

• Celestial navigationRelated: Its maritime forms helped sailors measure celestial altitude before the sextant.

• HipparchusRelated: Later positional astronomers used related geometric principles to measure the sky.

• House of WisdomRelated: Astronomical research in Abbasid Baghdad included the study and improvement of such instruments.

• Islamic astronomyRelated: Astronomers used astrolabes to measure celestial altitudes and solve practical problems.

• Portuguese discoveriesRelated: Celestial measurements helped mariners estimate their position far from familiar coastlines.

• PolarisRelated: Astrolabes could use Polaris and nearby stars to estimate celestial positions.

• SextantCompared with: It measures celestial angles through a different design and was used before the marine sextant.

• Al-BiruniRelated: Astrolabes were among the instruments used in the observational astronomy Al-Biruni practiced.

• History of astronomyRelated: Its widespread use linked practical observation, timekeeping, and mathematical astronomy.

• Armillary sphereCompared with: Unlike an armillary sphere’s three-dimensional rings, an astrolabe compresses celestial geometry into a plane.

• Astronomical instrumentBroader topic: The astrolabe models the visible sky for positional astronomy and timekeeping.

• Bartolomeu DiasRelated: Celestial observations helped Portuguese navigators determine their position during ocean crossings.

• CircumnavigationRelated: Celestial latitude estimates helped sailors maintain position on long ocean crossings.

• John CabotRelated: Celestial observations could help a navigator estimate latitude during an ocean crossing.

• Pedro Álvares CabralRelated: Celestial measurements helped navigators maintain their position on ocean passages.

• GnomonCompared with: Unlike a gnomon, an astrolabe measures angles through sighting and graduated scales rather than a cast shadow.

• Petrus PlanciusRelated: Its use at sea supported the latitude measurements needed to follow mapped voyages.

• Astronomical clockRelated: Astrolabes supplied astronomical schemes and visual conventions later adapted for clock dials.

• Celestial globeCompared with: It offered practical calculations that a celestial globe's spatial model alone could not provide.

• Astronomical tablesCompared with: Unlike a table’s stored values, an astrolabe performs calculations through a physical model.

• Cross-staffCompared with: The astrolabe offered an older approach to celestial observation and navigation.

• William BaffinRelated: Its observations helped navigators estimate latitude at sea.

• AlidadeRelated: Some astrolabes use a rotating sighting rule resembling an alidade.

• Jules Dumont d'UrvilleRelated: This ship carried the expeditions most closely associated with his career.

• Pope Sylvester IIRelated: Gerbert studied and taught astronomical instruments associated with Arabic scholarship.

• History of navigationBroader topic: Adapted for maritime use, it helped sailors estimate latitude from celestial observations.

• Ibn YunusRelated: Astrolabes formed part of the observational and computational tradition surrounding his work.

• Jacob’s staffCompared with: The astrolabe offered a different way to measure and calculate celestial coordinates.

• Renaissance technologyRelated: Mariners and astronomers used it to estimate latitude from the Sun or stars.

• Al-ʻIjliyyahNarrower topic: It is the instrument Al-ʻIjliyyah is reported to have made.

• Anania ShirakatsiRelated: The instrument exemplifies the practical astronomical techniques relevant to his scholarly tradition.

• European science in the Middle AgesBroader topic: European scholars and practitioners used it for astronomical measurement and timekeeping.

• Oronce FineRelated: Fine wrote and made instruments within the practical astronomy tradition that used astrolabes.