दूरबीन (खंड) के संपादन कइल जात बा

==बाहरी कड़ी==
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* [http://telescopes.stardate.org/ ''Galileo to Gamma Cephei – The History of the Telescope'']
* [http://galileo.rice.edu/sci/instruments/telescope.html ''The Galileo Project – The Telescope'' by Al Van Helden '']
* [http://www.aip.org/history/cosmology/tools/tools-first-telescopes.htm "The First Telescopes". Part of an exhibit from Cosmic Journey: A History of Scientific Cosmology] by the American Institute of Physics
* {{cite EB1911 |wstitle=Telescope |volume=26 |pages=557–573 |first1=Harold Dennis |last1=Taylor |first2=David |last2=Gill |short=1}}
* [http://spiff.rit.edu/classes/phys230/lectures/nonoptical/nonoptical.html Outside the Optical: Other Kinds of Telescopes]
* {{cite web|last=Gray|first=Meghan|title=Telescope Diameter|url=http://www.sixtysymbols.com/videos/telescope.htm|work=Sixty Symbols|publisher=Brady Haran for the University of Nottingham|author2=Merrifield, Michael |date=2009}}

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