B Possible for a particle to diffract around a barrier

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According to quantum theory it is possible for a particle to diffract around a barrier. Does this explain why I often seem to completely miss a tennis ball? Explain why or why not?
 
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rictor said:
Does this explain why I often seem to completely miss a tennis ball?

No. You and your tennis racket and the tennis ball are way too large for quantum diffraction to be significant.
 
By the way, you labeled this thread as "A", advanced. That indicates a graduate level understanding of the subject matter, which does not seem to reflect your actual understanding. I have re-labeled the thread level to "B".
 
rictor said:
According to quantum theory it is possible for a particle to diffract around a barrier. Does this explain why I often seem to completely miss a tennis ball? Explain why or why not?
As already stated this has nothing to do with QM :smile:. Tennis is pretty difficult, but fun. I think you have to train more. And observe the ball more accurately (sorry, I could not resist).
 
Its not a diffraction phenomena because there is no quantum tennis field.

it's about the Heisenberg uncertainty principle. I have lots of experimental tennis data to prove it.

The establishment won't publish it tho.
 
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!
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