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" For convenience in measuring distances the surface of the earth is divided into two equal parts by an imaginary line, called the Equator, extending horizontally around it. "
Elementary Inductive Geography - Página 22
por Mary R. Davis - 1900 - 228 páginas
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Physical Geography for Families and Schools

Rosina Maria Zornlin - 1856 - 167 páginas
...forms the other side of the globular-shaped earth and the waters on its surface. The Earth, or globe, is divided into two equal parts by an imaginary line called the equator, or equinoctial line, the upper portion (or half-sphere) of the globe being distinguished as the northern...
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The American Practical Navigator: Being an Epitome of Navigation and ...

Nathaniel Bowditch - 1888 - 647 páginas
...when the atmosphere is so clear and the sea-horizon so well defined. At any particular instant of time the surface of the earth is divided into two equal parts by the sun's illuminating power after applying the corrections due to parallax, refraction, and semkliameter...
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