The study explains how certain minerals can change colors repeatedly

The study explains how certain minerals can change colors repeatedly

The mineral hackmanite turns purple during UV irradiation, and the color fades back to white after a few … [+] minutes under normal white light. M.Lastusaari During the study of hackmanite, researchers found that it can change color when exposed to UV radiation repeatedly without wearing out. The results show that the cheap mineral, which …

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