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		panacea on Aug 6, 2013 \| parent \| context \| favorite \| on: We still don't really know how bicycles work Do we know why light propagates through glass in a straight line, but not paper yet?

madaxe on Aug 6, 2013 [–]

What? Yes. Quantum Electro Dynamics (QED) has some pretty compelling explanations at a "basement" level as to how this works.

Also, light does not propagate through glass in a straight line, it diffuses, refracts, and reflects.

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