Why is glass transparent? - Professor Phil Moriarty, Sixty Symbols
Sixty Symbols regular Professor Phil Moriarty discusses transparent glass and the so-called energy gap.
[video=youtube;Omr0JNyDBI0]https://www.youtube.com/watch?v=Omr0JNyDBI0[/video]
[video=youtube;Omr0JNyDBI0]https://www.youtube.com/watch?v=Omr0JNyDBI0[/video]
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