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optics
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'''Focus''' has several meanings:
 
'''Focus''' has several meanings:
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* In [[optics]], focus means that an image is correctly rendered on a plane. This involves the focal length of specific [[lens]]es.
    
* In [[psychology]], focus as a cognitive process means concentrating selectively on a single aspect of one's environment or thoughts while ignoring other things
 
* In [[psychology]], focus as a cognitive process means concentrating selectively on a single aspect of one's environment or thoughts while ignoring other things
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* In [[geology]], a focus is a point along a [[fault]] where an [[earthquake]] begins (hypocenter versus [[epicenter]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>
    
* In [[Buddhism|Buddhist]] [[meditation]], focus means [[concentration|concentrating]] the [[mind]] selectively on a single aspect of one's thoughts or images while [[renunciation|letting go]] of all other things until the mind become "single-pointed" ("[[samadhi]]") through [[relaxation|relaxed]] focused [[awareness]] ("[[shamatha]]"). According to Buddhism, focus is related to the "[[fire]] element" of the mind and nervous system.
 
* In [[Buddhism|Buddhist]] [[meditation]], focus means [[concentration|concentrating]] the [[mind]] selectively on a single aspect of one's thoughts or images while [[renunciation|letting go]] of all other things until the mind become "single-pointed" ("[[samadhi]]") through [[relaxation|relaxed]] focused [[awareness]] ("[[shamatha]]"). According to Buddhism, focus is related to the "[[fire]] element" of the mind and nervous system.
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* In [[geology]], a focus is a point along a [[fault]] where an [[earthquake]] begins (hypocenter versus [[epicenter]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>
      
==References==
 
==References==
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