Natural Philosophy: With an Explanation of Scientific Terms, and an Index, Volumen3

already altitude amount angle appear ascertained astronomers axis body called cause centre circle circumstances consequently considerable continually correction corresponding course declination described determined diameter direction distance drawn earth east eclipse effect elevation equal equator equinox evident existence explained extreme fact figure fixed force give given greater greatest heavenly heavens horizon hour important increases islands known latitude latter length less light longitude manner mean measured meridian method miles moon moon's motion move nature nearly North object observed ocean orbit parallax parallel particular pass period plane pole portion position present produced proportion quantity radius reason reference refraction remarkable represent respect rising round sailing seen side situated solar South space sphere stars sun's supposed surface tables tion triangle true varies visible whole wind zenith