Dispersion
The variation of refractive index with wavelength; all glasses and immersion oils show dispersion, which is why RI must be specified at a defined wavelength (conventionally sodium D line, 589 nm) for comparison to be meaningful.
The variation of refractive index with wavelength; all glasses and immersion oils show dispersion, which is why RI must be specified at a defined wavelength (conventionally sodium D line, 589 nm) for comparison to be meaningful.
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