I Create movement from leveraging the propagation of magmatism

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The discussion revolves around a theoretical setup involving two electro-magnets and the propagation of magnetism. The initial question concerns whether activating one magnet while deactivating the other would result in directional movement. Participants emphasize the importance of adhering to conservation laws, stating that movement cannot occur without emitting something to conserve momentum. The conversation suggests that understanding the relevant equations is crucial for analyzing the scenario accurately. Ultimately, the thread concludes with a recommendation to explore the math behind the concepts presented.
seb7
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Create movement from leveraging the propagation of magmatism
Imagine two electro-magnets about a metre apart aimed at each other. We turn one of them on, and are able to watch the magnetism propagate in slow motion. The moment the magnetism reaches the second electro-magnet, we turn this on (in a manner in which it attracts), and turn the first one off. Am I correct in that only the second one would move towards the first one?

As the magnetism from the second electro-magnetic propagates back to the first one, the first one in turned on, but in an opposite current, creating repulsion, while the other electro-magnetic is turn off. Am I correct in that now only the electro-magnetic which is on is being repelled?

ie. would putting this setup inside a box, and oscillating power in this manner (at around 149mhz?) generate one directional movement?

Seb
 
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seb7 said:
would putting this setup inside a box, and oscillating power in this manner (at around 149mhz?) generate one directional movement?
If you mean, without emitting anything to conserve momentum, then no. You can't violate conservation laws.
 
PeterDonis said:
If you mean, without emitting anything to conserve momentum, then no. You can't violate conservation laws.
yep I understand this, but where's the flaw?
 
seb7 said:
where's the flaw?
I don't know. Have you tried to actually do the math?
 
PeterDonis said:
I don't know. Have you tried to actually do the math?
I don't know of any equations that take into account the propagation of these forces
 
seb7 said:
I don't know of any equations that take into account the propagation of these forces
Then your first step should be to learn them. Once you have, if you work through the math for the scenario you posed and still can't see how momentum is conserved, then you can start a new thread with a much more specific question based on actual math, and therefore a much better basis for PF discussion.

In the meantime, this thread is closed.
 
Moderator's note: Spin-off from another thread due to topic change. In the second link referenced, there is a claim about a physical interpretation of frame field. Consider a family of observers whose worldlines fill a region of spacetime. Each of them carries a clock and a set of mutually orthogonal rulers. Each observer points in the (timelike) direction defined by its worldline's tangent at any given event along it. What about the rulers each of them carries ? My interpretation: each...

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