De fată rău climat diopter calculator Pelerina de ploaie astăzi germene
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The power of lens is, `-2D`. Calculate its focal length. - YouTube
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SOLVED: The figure illustrates qualitatively a corrective lens of -3.50 diopters. The lens material is CR-39 monomer, with an index of refraction of 1.499. Calculate R, the radius of curvature of the