英语词汇“molar refractivity”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

molar refractivity

Physical Chemical

noun

A quantity calculated from a function of the refractive index of a substance multiplied by its molecular weight and divided by its density, which can be taken as a measure of the volume occupied by a molecule of the substance.

The function of the refractive index is now usually expressed as n 2 − 1/n 2 + 1, where n is the refractive index, so that the molar refractivity is n 2 − 1/n 2 + 1 × M/d.The concept originated with J. H. Gladstone and T. P. Dale in 1863, who introduced the quantity n − 1/d, calling it ‘specific refractive energy’ (Philos. Trans. (Royal Soc.) 153 320)..

Origin

1920s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America.

单词	molar refractivity
释义	molar refractivity Physical Chemical noun A quantity calculated from a function of the refractive index of a substance multiplied by its molecular weight and divided by its density, which can be taken as a measure of the volume occupied by a molecule of the substance. The function of the refractive index is now usually expressed as n 2 − 1/n 2 + 1, where n is the refractive index, so that the molar refractivity is n 2 − 1/n 2 + 1 × M/d.The concept originated with J. H. Gladstone and T. P. Dale in 1863, who introduced the quantity n − 1/d, calling it ‘specific refractive energy’ (Philos. Trans. (Royal Soc.) 153 320).. Origin 1920s; earliest use found in Proceedings of the National Academy of Sciences of the United States of America.
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