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Physics, Astronomy & Cosmology / Quantum Reflection
« on: 22/04/2004 20:41:37 »
I read a book recently that was all about the theory of Quantum Electrodynamics. This strange theory that can explain how photons and electrons interact. As a starting point for trying to explain how it works, the book pointed out the phenomenon of partial reflection. that is, when some photons pass straight through glass and others are bounced straight back off it.
The book stated and explained that between 4% and 16% of the photons meeting the glass bounce back off it (depending on the thickness of the glass.) I understand why this is but what i would like to know is how is it that this percentage of photons 'know' that they are supposed to bounce back up.
I find this topic quite tricky at the best of times, so any help would be very welcome.
I Love Caesium!!!
The book stated and explained that between 4% and 16% of the photons meeting the glass bounce back off it (depending on the thickness of the glass.) I understand why this is but what i would like to know is how is it that this percentage of photons 'know' that they are supposed to bounce back up.
I find this topic quite tricky at the best of times, so any help would be very welcome.
I Love Caesium!!!