Difference between revisions of "Nadir"
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| − | + | [[Image:CenitNadir.gif|right|250px]] | |
| + | The '''nadir''' is the point on [[Earth]] directly beneath a [[satellite]], the opposite of [[zenith]]. Compare with [[subsatellite point]]. <ref> [http://earthobservatory.nasa.gov/Library/glossary.php3?mode=all NASA Earth Observatory glossary] </ref> | ||
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| + | '''Etymology:''' Middle English, from Middle French, from Arabic naḍhīr opposite | ||
| + | Date: 15th century. <ref>[http://www.m-w.com/dictionary/nadir Nadir] Merriam-Webster Online Dictionary </ref> | ||
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| + | == References == | ||
| + | <references/> | ||
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| + | [[Category:Astronomy]] | ||
Revision as of 14:34, March 9, 2008
The nadir is the point on Earth directly beneath a satellite, the opposite of zenith. Compare with subsatellite point. [1]
Etymology: Middle English, from Middle French, from Arabic naḍhīr opposite Date: 15th century. [2]
References
- ↑ NASA Earth Observatory glossary
- ↑ Nadir Merriam-Webster Online Dictionary