Passion of Physics ... A Journey Through Space-Time ...
கற்றனைத்தூறும் அறிவு ...सिधिर भवती करमजा
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Passion of Physics - Gravity - A Tale
Achromatic Doublet
An achromatic doublet is a combination of a concave and convex lenses made of different materials specifically designed to eliminate chromatic aberration inherent in single lenses.
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