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Chromatic aberration is an optical flaw in lenses that causes different wavelengths of light to focus at slightly different points, resulting in colorful fringes or blurs around edges in images. This issue, stemming from the varying refractive indices of glass for different colors, has been a longstanding challenge in optics but is now routinely corrected in high-end cameras and telescopes through specialized designs, enhancing visual clarity in everyday and scientific applications.
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