- Unit Neutral Normalized Spectral Analytical Density
- Photo: UNNSAD
Универсальный русско-английский словарь. Академик.ру. 2011.
Универсальный русско-английский словарь. Академик.ру. 2011.
UNNSAD — phot. abbr Unit Neutral Normalized Spectral Analytical Density … United dictionary of abbreviations and acronyms
Absorbance — Optical density redirects here. Optical density can also refer to index of refraction.[1] In spectroscopy, the absorbance A (also called optical density)[2][3] is defined as:[4] , where I is the inte … Wikipedia