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General Science / Translucent, yet hermetical !?
« on: 24/11/2008 03:31:42 »
Say, this question has been asked many times, but I can't recall the exact answer: Why is it that in some scenarios, such as glass, matter can be translucent, and allow light to penetrate it, simultaneously holding back just about everything else, e.g., water, air, etc. ?