出典:Wiktionary
出典:『Wiktionary』 (2017/04/23 20:05 UTC 版)
refractometry (usually uncountable, 複数形 refractometries)
出典:Wikipedia
出典:『Wikipedia』 (2010/06/30 11:30 UTC 版)
Refractometry is the method of measuring substances' refractive index (one of their fundamental physical properties) in order to, for example, assess their composition or purity. A refractometer is the instrument used to measure refractive index ("RI"). Although refractometers are best known for measuring liquids, they are also used to measure gases and solids; such as glass and gemstones.