Quantum Falling Magnet: Lenz's Law Demo?

In summary, the conversation discusses the possibility of using a quantum particle with a non-zero magnetic moment in place of a magnet in a demonstration of Lenz's law. The idea is to generate a current as the particle falls, although the current would be very small due to the particle's small moment and size. The group also discusses the potential use of this method in experiments to detect magnetic monopoles, but it may not be effective in detecting the spin of a neutron. They also mention the use of SQUIDs in this method, referencing a previous experiment by Cabrera. There is some uncertainty about whether the particles lose kinetic energy when passing through the SQUID.
  • #1
gildomar
99
2
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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  • #2
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.
 
  • #3
Are you talking about arrangements using SQUIDs like Cabrera did in '82?
 
  • #4
Yes, That is the one
 
  • #5
I'm a little fuzzy as to whether the particles lose any kinetic energy when passing through the SQUID there.
 

Related to Quantum Falling Magnet: Lenz's Law Demo?

1. What is a "Quantum Falling Magnet"?

A Quantum Falling Magnet refers to a demonstration of Lenz's Law, which states that when a magnet is dropped through a conducting ring, the resulting magnetic field creates an opposing current in the ring, causing the magnet to fall more slowly than expected.

2. What is Lenz's Law?

Lenz's Law is a basic principle of electromagnetism that states that an induced electromotive force (EMF) will create a current in a conductor that opposes the change in the magnetic field that produced it.

3. How does the Quantum Falling Magnet demo work?

In the demo, a magnet is dropped through a conducting ring, creating a changing magnetic field. This changing magnetic field induces a current in the ring, which in turn produces its own magnetic field. This magnetic field opposes the falling magnet's field, causing it to fall more slowly.

4. What is the significance of the Quantum Falling Magnet demo?

The demo serves as a visual representation of Lenz's Law and how it applies to electromagnetic induction. It also demonstrates the concept of conservation of energy, as the magnetic field created by the induced current opposes the falling magnet's motion and slows it down.

5. What real-world applications does Lenz's Law have?

Lenz's Law has many practical applications, such as in generators and motors, where it is used to convert mechanical energy into electrical energy and vice versa. It is also important in the design of electromagnetic brakes, which use Lenz's Law to slow down or stop moving objects.

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