<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article  PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="3.0" xml:lang="en" article-type="research article"><front><journal-meta><journal-id journal-id-type="publisher-id">Detection</journal-id><journal-title-group><journal-title>Detection</journal-title></journal-title-group><issn pub-type="epub">2331-2076</issn><publisher><publisher-name>Scientific Research Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.4236/detection.2014.22002</article-id><article-id pub-id-type="publisher-id">Detection-44601</article-id><article-categories><subj-group subj-group-type="heading"><subject>Short Report</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Chemistry&amp;Materials Science</subject></subj-group></article-categories><title-group><article-title>
 
 
  What Is Detection?
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>en</surname><given-names>Qian</given-names></name><xref ref-type="corresp" rid="cor1"><sup>*</sup></xref></contrib></contrib-group><author-notes><corresp id="cor1">* E-mail:<email>qians@ihep.ac.cn, qiansenfay@gmail.com</email>;<email>The Institute of the High Energy Physics, Chinese Academy of Sciences, China</email>;</corresp></author-notes><pub-date pub-type="epub"><day>08</day><month>04</month><year>2014</year></pub-date><volume>02</volume><issue>02</issue><fpage>7</fpage><lpage>9</lpage><history><date date-type="received"><day>December</day>	<month>1st,</month>	<year>2013</year></date><date date-type="rev-recd"><day>January</day>	<month>2nd,</month>	<year>2014</year>	</date><date date-type="accepted"><day>January</day>	<month>10th,</month>	<year>2014</year></date></history><permissions><copyright-statement>&#169; Copyright  2014 by authors and Scientific Research Publishing Inc. </copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/</license-p></license></permissions><abstract><p>
 
 
  “Detection”, literally, in English, is the extraction of particular information from a larger stream of information without specific cooperation from or synchronization with the sender. In Chinese, detection means inspection and measurement of the object or phenomenon, which couldn’t be directly observed, with apparatus, such as detecting space and the depth of the sea.
 
</p></abstract><kwd-group><kwd>detection</kwd><kwd> detector</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>References</title></sec><sec id="s2"><title>NOTES</title></sec></body><back><ref-list><title>References</title><ref id="scirp.44601-ref1"><label>1</label><mixed-citation publication-type="other" xlink:type="simple">Guide to the Definition of the Detection in Wikipedia (2014)  
http://en.wikipedia.org/wiki/Detection</mixed-citation></ref><ref id="scirp.44601-ref2"><label>2</label><mixed-citation publication-type="other" xlink:type="simple">Guide to the Definition of the Detection in Chinese (2014) http://baike.baidu.com (in chinese)</mixed-citation></ref><ref id="scirp.44601-ref3"><label>3</label><mixed-citation publication-type="other" xlink:type="simple">The Official Website of the Hubble Space Telescope (2014)  
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http://en.wikipedia.org/wiki/CERN</mixed-citation></ref><ref id="scirp.44601-ref7"><label>7</label><mixed-citation publication-type="other" xlink:type="simple">Noble Prizes of Physics 2013. Guide to the Official Website of 2013 Noble Prize of Physics (2014)  
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