日本科学未来館 ひかりをためる.wmv

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Uploaded by on Nov 23, 2011

蓄光材料
蓄光(または燐光)材料は、受けた光をいったん吸収し、蓄えたエネルギーを少しずつ再び光に変えて放出する性質をもっています。改良を重ねて、現在では一度光をためると、­一昼夜光り続ける材料が開発されています。

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