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People wearing glasses may usually have experienced to clean their glasses with their T-shirts. Although it can clean the frame of glasses, but can't polish the lenses. Because the cotton textile can scratch the lenses. Tap's role in a T-shirt is only to deliver the information on the clothe. But, the exchanging the textile of tap from the silk to the yoong(a kind of cloth used at cleaning the lenses) can clean the glasses.
Seoul National University of Tech.
Seoul, South Korea
Prof. HAN SUK WOO
Bucheon, South Korea