Dispersion


   
 
Color Deficiency or Color Blindness
Color deficiency is that defect of the eye due to which a person is not able to distinguish between certain colors mainly due to the malfunctioning or absence of a particular cone.
 
It is said that Dalton, was color blind. He was not able to distinguish between primary colors and hence medical practitioners used to call this defect as Daltonism.
 
 
     
   
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