UNFOLD OF SPHERE BY MERIDIAN CROSS SECTIONS
     The spherical surface couldn't be unfolded without deformation.
          The spherical surface may reckon flat, cylindrical or cone in suffice small part.
          ( The deformations will be insignificant, when we put unfold on the spherical surface. )

  Sketch of dimensions:

 

      
Radius of the sphere    R =  mm.
Number of the meridians   N =
  

  Accuracy ( Density of the unfold ) :
Number of parallels  n =  


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