Was recently re-reading QED and wondered whether there was any "simple" explination of partial reflection? How does the thickness of glass affect reflection if it's a particle?
Actually, nobody knows the answer to this one. For a basic exposition, I would highly recommend that you read "QED-The Strange theory of light and Matter by R.P Feynman".
The stuff you learn about matching up boundary conditions to retrace the path of the reflected and refracted rays (Classical Electrodynamics approach) does not answer the question why? It gives the answer, but not at the fundamental level.
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pmerrill
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Yeh, I've read QED, very good treatment, not enough math for me to really understand things. Odd that a problem that is so simple to demonstrate, and known about since Newton's time, has yet to be solved. Maybe it's Fermats last theorem for physicists?
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles.
Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated...
Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/
by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
I don't know why the electrons in atoms are considered in the orbitals while they could be in sates which are superpositions of these orbitals? If electrons are in the superposition of these orbitals their energy expectation value is also constant, and the atom seems to be stable!