index liquid

index liquid

[′in‚deks ‚lik·wəd]
(optics)
A liquid whose index of refraction is known, used to find the index of refraction of powdered substances with a microscope.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
To do this with a microscope, you can buy refractive index liquids or get pretty close by using available liquids having a refractive index found on the Internet.
Farrell, "A macrobending singlemode fiber refractive index sensor for low refractive index liquids," Photonics Letters of Poland, vol.
It should again be pointed out here that this device is of merely minor importance in mineralogical research except for the fact that it was often used for calibrating index liquids.