- Solar Declination
- The apparent angle of the sun north or south of the eath's equatorial plane. The earth's rotation on its axis causes a daily change in the declination.
Energy terms . 2014.
Solar Declination
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Solar declination — The apparent angle of the sun north or south of the earth s equatorial plane. The earth s rotation on its axis causes a daily change in the declination. U.S. Dept. of Energy, Energy Information Administration s Energy Glossary … Energy terms
Declination — For other uses, see Declination (disambiguation). In astronomy, declination (abbrev. dec or δ) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is… … Wikipedia
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Solar apex — The solar apex, or the Apex of the Sun s Way, refers to the direction that the Sun travels through space. This is not to be confused with the Sun s apparent motion through the constellations of the zodiac, which is illusory this supposed motion… … Wikipedia
Solar elevation angle — The solar elevation angle is the elevation angle of the sun. That is, the angle between the directionof the sun and the (idealized) horizon. It can be calculated, to a good approximation, using thefollowing formula::, sin heta mathrm{s} = cos h… … Wikipedia
declination — the latitude where, on any particular day, the sun is 90˚ above the horizon at solar noon i.e. when the sun is aligned between true north and true south … Geography glossary
Declination — The angular position of the sun at solar noon with respect to the plane of the equator … Energy terms
Sundial — A sundial is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style (a thin rod or a sharp, straight edge) onto a flat surface marked with lines indicating… … Wikipedia
