Quantum Falling Magnet: Lenz's Law Demo?

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Discussion Overview

The discussion revolves around the application of Lenz's law in a scenario involving a quantum particle with a magnetic moment falling through a solenoid, and whether this setup could generate a detectable current. Participants explore the feasibility of this idea and its implications for experiments related to magnetic monopoles and the behavior of particles in SQUID arrangements.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests replacing a classical magnet with a quantum particle of non-zero magnetic moment in a solenoid to generate a current as it falls, noting the expected smallness of the current.
  • Another participant mentions ongoing experiments to detect magnetic monopoles using similar methods, while expressing skepticism about the method's viability for detecting the spin of a neutron.
  • A participant inquires about the use of SQUIDs in this context, referencing a specific experiment from 1982.
  • One participant expresses uncertainty regarding whether particles lose kinetic energy when passing through a SQUID.

Areas of Agreement / Disagreement

Participants appear to have differing views on the feasibility and implications of using quantum particles in this context, with some expressing skepticism about certain aspects while others explore the idea further. The discussion remains unresolved regarding the specifics of energy loss in SQUIDs and the practicality of the proposed method.

Contextual Notes

There are limitations regarding the assumptions made about the behavior of quantum particles in this setup, as well as the definitions of terms like "kinetic energy loss" in relation to SQUIDs. These aspects are not fully clarified in the discussion.

gildomar
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I take it that it would be ok that in the classic demonstration of Lenz's law with the falling magnet, to replace the magnet with some quantum particle of non-zero magnetic moment and make the tubing a solenoid in order to generate a current as the particle fell? Obviously the current would be miniscule, given the small moment and particle size; I'm just making sure that I have the general idea right first.

p.s. Would this be the right sub-forum for this? Or would it belong in the particle or even classical physics section?
 
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Yes, Experiments are in progress to detect Magnetic Monopoles using this method. It probably won't be a viable method to detect say the the Spin of a neutron.
 
Are you talking about arrangements using SQUIDs like Cabrera did in '82?
 
Yes, That is the one
 
I'm a little fuzzy as to whether the particles lose any kinetic energy when passing through the SQUID there.
 

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