| 11. | Armillary spheres were among the first complex mechanical devices.
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| 12. | Two primary examples of modified equatorial sundials are bowstring equatorial and armillary dials.
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| 13. | So we designed an armillary to show the Milky Way galaxy at its center.
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| 14. | WHAT IS AN ARMILLARY SPHERE ? ( a)
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| 15. | The flag of Portugal features an armillary sphere.
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| 16. | In 1514, armillary sphere of King Manuel I, symbol of the discoveries.
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| 17. | Part of the excitement of viewing the armillary is contemplating the vastness of the heavens.
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| 18. | ANSWER : It's an armillary sphere, one of the oldest astronomical tools.
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| 19. | Richer also revealed how Gerbert made the planets more easily observable in his armillary sphere:
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| 20. | This armillary sphere was also described by Gerbert in a letter to his colleague Constantine.
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