Characterizing Color with Reflectance
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Simeen Sattar [1]
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[1] Bard College
Bard College
Town of Red Hook, Estados Unidos
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 96, Nº 6, 2019, págs. 1124-1128
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Pigments, dyes, and transition-metal compounds are made in courses across the undergraduate chemistry curriculum, but student characterization of these compounds’ most striking features, their colors, seldom goes beyond verbal descriptions. Affordable, hand-held, fiber-optic reflectance spectrophotometers make it possible to advance students’ understanding of color. Reflectance spectra provide graphical information about color, whereas CIE L*a*b* color coordinates describe color quantitatively. This article describes how collection and interpretation of reflectance data are used to round out pigment syntheses in a course for nonscience majors. This approach is transferrable to any experiment in which students obtain colored solids.
