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Fused silica is used for ultraviolet radiation.

For the visible spectrum some types of glasses are more dispersive - this means that the refractive index is more dependent on the wavelength of a radiation.

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12y ago
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12y ago

This is directly taken from a solutions manual for this question. I don't really understand why and plan on asking my professor, but this is what the manual says:

(Unlike gratings)Prisms have non-linear dispersion but the degree of dispersion depends on the refractive index () of the material for each wavelength (ís for glass and quartz in the visible spectrum are different) and the dispersion in the visible part of the spectrum is better for glass.

Hope that helps.

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Q: Why is glass better than fused silica as prism construction?
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