Wed, 14 Jul 2010 06:12:09
The tropics is a region of the Earth by the Equator. It is limited in latitude by the Tropic of Cancer in the northern hemisphere at approximately 23°26' (23.5°) N and the Tropic of Capricorn in the southern hemisphere at 23°26' (23.5°) S. The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone).
The tropics include all the areas on the Earth where the Sun reaches a point directly overhead and a point directly underneath at least once during the solar year. Outside the tropics, the Sun never reaches a point directly overhead or a point directly underneath at any time during the year.