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dioptre
Symbol:   
Category:  Refractive power 
SI Equivalent:  1 /m
Dimension L-1 
System:  SI 
 
Notes
SI derived unit. It represents the refractive power of an optical system having a focal length of 1 meter in a medium with a refractive index of 1.
This is the only unit we have in this catagory, no conversions are available.
Glossary