Which effect arises by using geared astrolabes to model eccentric orbits of Medieval astronomical models?

💡 Explanation

When astrolabes incorporated gears to represent epicyclic motions, this mechanism generated a variable orbital speed component because geared systems model changes in distance. Therefore, the device could simulate planetary retrograde motion, rather than refraction, declination, or parallax, which involves refraction properties or lunar position relative to Earth.

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