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A) No, they still experience relativistic effects that is not explained via quantum mechanics, unfortunately for some scenarios, one theory is not sufficient to describe what is happening. For Example, subatomic particles can still experience time dilation. Again, it isn't as straight forward as "it's small, QM it is". If things were that clear cut, there would not be a need to develop new theories, and there are a lot in the works right now. String theory alone has a ton of subsidiaries, quantum field theory, quantum loop gravity and the list goes on.
B) |

I posted this back in the original thread on the discovery a while back...

Doing an infinite number of things simultaneously, or how quantum mechanics really screws with your head.

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I'm sure all of you have heard of Young's double slit experiment. You shine a light through a small slit you get a single band (particle behavior of light). You expect that when you shine the light through 2 slits you get 2 bands. Yet, you don't, you get a whole ton of bands instead. This is the traditional experiment for the wave nature of light. Quantum mechanics takes this further by addressing the troubling issue that in young's double slit experiment, if you modify the experiment to determine which slit an electron goes through, you actually modify the result, making the experiment show 2 bands appear as opposed to the many. This is a fundamental contradiction, how have we eliminated the wave behavior of light suddenly? Quantum mechanics actually states that the electron you shot out doesn't just go through 1 slit, it actually comes back and goes through the other slit as well. In fact, every single one of the infinite possible trajectories are taken by the electron. The final location of the electron is a culmination of all the infinite trajectories the electron has taken to get to its destinations and is known as Feynman's sum over paths approach to quantum mechanics. In fact, this is one of the few quantum mechanical theories that applies to classical physics. If you do the math and use objects like planets, you'll find the sum over paths approach results in the same trajectory calculation as traditional physics. The difference is that in objects above plancks constant the math actually comes out so that all but 1 trajectory cancel each other out, leaving us with the one classical physics calculated. The issue is that at the quantum level, these infinite other possible paths do NOT cancel each other out, and therefor affect the final location of the electron shot through the slit. The implication here is that electrons travel over an infinite number of paths simultaneously, which would require faster than light to speed to achieve. |