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The toothbrush-sized product has a blue light at its tip, which, when shone around the mouth and viewed through yellow glasses with a red filter, allows plaque to be seen easily as a red glow. The dev...
Health and Medicine |Blue light destroys certain structural elements in the eye, as was revealed by the Russian research team. The mechanism of this effect was studied, and protective measures were offered. The ...
Physics and Astronomy |Additional Sponsors | |
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