Abstract
IN an interesting note by Mr. Churcher communicated to the Physical Society of London (Proc. Roy. Soc., vol. xxx., part iii., April 15, 1918) on the occasion of my paper on refractometers, it is pointed out that it had been observed that the Zeiss Abbe refractometer fails when measurements are required of liquids having an index exceeding 1.52. This Mr. Churcher stated to be due to the substitution of a crown prism of refractive index 1.52 for D in the place of the dense flint prism formerly used as lower or illuminating prism.
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SIMEON, F. Zeiss Abbe Refractometer. Nature 102, 226 (1918). https://doi.org/10.1038/102226a0
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DOI: https://doi.org/10.1038/102226a0
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