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We had an earlier topic in which Cold Fusion asked a perfectly valid question:
The thread was hijacked by the usual idiot, which led to some pitiful flame-tossing by folks who should know better. Nobody bothered to give Cold Fusion a respectable answer. No one even tried. So I will respond to the actual question by Cold Fusion.Originally Posted by Cold Fusion
The components of ordinary soda-lime glass do not contain any atomic or molecular bonds that can absorb light's frequencies. That is, the energy levels of the normal electron transitions in glass do not match any of the frequencies of visible light.
This is not a coincidence. The earliest glassmakers searched for the right ingredients of the right purity to ensure this key transparency property for glass.
Note also that light is not totally unaffected by its passage through glass. The light is slowed down and we see refraction, the amount of which is determined by each frequency. I hope that helps, CF.
Now friends, if the Village Idiot shows up (count on it!), do us all a favor and DO NOT RESPOND! Ignoring him will not make him go away. Just don't make things worse by encouraging his rebuttal. Thank you.
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