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出典:Wiktionary
出典:『Wiktionary』 (2025/07/27 13:06 UTC 版)
opalescence (countable and uncountable, plural opalescences)
出典:Wikipedia
出典:『Wikipedia』 (2011/02/15 13:54 UTC 版)
Opalescence is a type of dichroism seen in highly dispersed systems with little opacity. The material appears yellowish-red in transmitted light and blue in the scattered light perpendicular to the transmitted light. The phenomenon is named after the appearance of opals.