CROWN GLASS PRISM FOR SPECTROMETER

This is an equilateral prism with all the 3 angles of 600 each and all the sides measuring 25mm each.
It is made of optically worked crown glass which has a relatively low refractive index of approximately 1.52 and a low dispersion.
The crown glass prisms are mainly used with spectrometers.
Students can also understand how chromatic aberrations can be reduced by combining a flint glass prism with a crown glass prism. The dispersions of the glasses partially compensate for each other.

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