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Category:Optical variables measurement

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IEEE GHN Category
 
 
[[Image:Optical Variables Measurements Yerkes 40 inch Refractor Telescope 1897.jpg|thumb|right| A 1897 photo of the 40 inch refractor telescope at the Yerkes Observatory]]
 
[[Image:Optical Variables Measurements Yerkes 40 inch Refractor Telescope 1897.jpg|thumb|right| A 1897 photo of the 40 inch refractor telescope at the Yerkes Observatory]]
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The measurement of visual signals
  
 
[[Category:Measurement|{{PAGENAME}}]]
 
[[Category:Measurement|{{PAGENAME}}]]

Latest revision as of 21:15, 23 January 2013

A 1897 photo of the 40 inch refractor telescope at the Yerkes Observatory
A 1897 photo of the 40 inch refractor telescope at the Yerkes Observatory

The measurement of visual signals

Media in category "Optical variables measurement"

This category contains only the following file.