The dispersive powers of crown and flint glass are 0.015 and 0.030 respectively. The refractive indices for the mean rays are 1.52 and 1.65. If one of the surfaces of the lenses which form an achromatic doublet of focal length 80 cm.
The dispersive powers of crown and flint glass are 0.015 and 0.030 respectively. The refractive indices for the mean rays are 1.52 and 1.65. If one of the surfaces of the lenses which form an achromatic doublet of focal length 80 cm.
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The dispersive powers of crown and flint glass are 0.015 and 0.030 respectively. The refractive indices for the mean rays are 1.52 and 1.65. If one of the surfaces of the lenses which form an achromatic doublet of focal length 80 cm.
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