| Rosina Maria Zornlin - 1856 - 202 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... | |
| Nathaniel Bowditch - 1888 - 704 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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