金的红移:沟槽中多次反射的比色法

IF 2.1 4区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR Gold Bulletin Pub Date : 2020-11-18 DOI:10.1007/s13404-020-00285-y

Arnaud Manas

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引用次数: 5

摘要

纯金的颜色表现出矛盾的变化，这种变化暂时可以用冶金因素来解释。测量和数码照片显示，它的颜色比理论预测的要红得多。提出了一种新的基于沟槽内多次反射的纯光学解释。对几个纯金样品和金币的照片进行的比色空间RGB分析证实，金红移来自微小的凹槽，这些凹槽看似黑色，但实际上具有极深的橙色/红色。

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Gold’s red shift: colorimetry of multiple reflections in grooves

The color of fine gold shows paradoxical variations that have tentatively been explained by metallurgic factors. Measurements and digital photographs show a significantly redder color than predicted by theory. A novel purely optical explanation based on the multiple reflection in grooves is suggested. The analysis in the colorimetric space RGB of the photographs of several fine gold samples and coins confirms that the gold red shift comes from minute grooves that seem black but that in fact have an extremely dark orange/red color.

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来源期刊

Gold Bulletin Chemistry-Inorganic Chemistry

CiteScore

3.70

自引率

4.50%

发文量

期刊介绍： Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.