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10 cards from this deck
Optical defects that degrade image quality
Dispersion - refractive index varies with wavelength
Blue/violet light (shorter wavelength) refracted more strongly
Coloured fringes around objects in the image
Two lenses that bring two wavelengths to same focus
Crown glass (low dispersion) and flint glass (high dispersion)
Curved lens shape causes rays to focus at different positions
Edge rays deviate more than rays near optical axis
Image blurring (not coloured fringes)
Spherical aberration
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