An optical device (@F02384@) which reduces the @R05046@ of a light beam by a constant factor over all wavelengths within its operating range. Sometimes called attenuator or neutral density @F02384@.
Source: PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2229 [Terms] [Paper]
Citation: 'attenuance filter' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.A00514 RISBibTexEndNote