Donna ChenAug 30, 20211 minPhotochromic Pigment – Sensitivity Test IIPhotochromic Pigment – Sensitivity Test The colour of photochromic pigment appeared immediately after its exposure to UV-Light. The...
Donna ChenAug 30, 20211 minPhotochromic Pigment – Sensitivity Test IThe intensity of the photochromic colour (new blue) increased with the decreasing distance between UV light source and photochormic...
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