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Gina DelMonache; Pratahdeep Gogoi; Xiaoli Ge; Xingyu Wang; Rachel Snider; Owen Szeglowski; Timothy R. Cook; Ziyun Wang; Yuguang C. Li – Journal of Chemical Education, 2025
Spectroscopy is an integral part of chemical research, and the operation of any spectroscopic instrument is critical in chemical education. This study presents a low-cost, do-it-yourself (DIY) style spectrophotometer system that can be adapted for UV--vis spectrophotometry, fluorimetry, and atomic emission spectroscopy applications. The DIY system…
Descriptors: Chemistry, Measurement Equipment, Light, College Science
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Andrew Lynn; John Maule; Dima Amso – Child Development, 2024
Children (N = 103, 4-9 years, 59 females, 84% White, c. 2019) completed visual processing, visual feature integration (color, luminance, motion), and visual search tasks. Contrast sensitivity and feature search improved with age similarly for luminance and color-defined targets. Incidental feature integration improved more with age for…
Descriptors: Visual Perception, Age Differences, Light, Color
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Petra Dunkel; Bence Kontra; Barnaba´s Gere; Vuong Tran; Zolta´n Kaleta – Journal of Chemical Education, 2025
A simple demonstration adaptable to classroom conditions is presented, which involves the preparation of raffle tickets using filter paper and the solution of selected fluorophores. With an appropriate dilution, the text written on the tickets is not visible to the naked eye; however, it becomes readable once put under a UV lamp. Besides being a…
Descriptors: Demonstrations (Educational), Chemistry, Science Education, Scientific Concepts