| 31. | The projection of the Earth's equator onto the celestial sphere is called the celestial equator.
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| 32. | The zones of the celestial sphere repeated on a larger scale those of the terrestrial sphere.
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| 33. | The celestial sphere is an imaginary globe of infinite size with the Earth at its center.
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| 34. | At the equator you see all of the celestial sphere, at either pole only one half.
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| 35. | :: Based on the theories of his predecessors, Zhang Heng systematically developed the celestial sphere theory.
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| 36. | The observatory was fitted with an armillary sphere which is a model of the celestial sphere.
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| 37. | These two articles dealing with the celestial spheres formed a major element in Logicus's controversial edits.
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| 38. | Components of proper motion on the Celestial sphere.
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| 39. | The M�bius transformations are the conformal transformations of the Riemann sphere ( or celestial sphere ).
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| 40. | For navigators near the equator celestial navigation is simplified since the whole celestial sphere is exposed.
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