Most powerful electromagnet/magnet for hobbyist?

  • Thread starter Thread starter Sven Andersson
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The discussion centers on identifying the most powerful electromagnet available for hobbyists, focusing on affordability and field strength. Superconducting magnets are noted as being prohibitively expensive for most hobbyists. Participants express curiosity about where to purchase powerful electromagnets, highlighting a lack of retail options compared to other high-tech equipment like lasers. A specific product, the variable gap magnet from Pasco, is recommended as a potential solution. Overall, the conversation emphasizes the need for accessible and powerful electromagnets for hobbyist use.
Sven Andersson
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What is the most powerful electromagnet/magnet that a hobbyist can afford to buy? That is, the one that can generate the strongest field? Are superconducting magnets prohibitively expensive? Really powerful lasers can be bought on the Internet, but I have never seen a store for electromagnets. Is there one?
 
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I would say, check out this thread. But as it turns out, that's a question that you asked. And didn't stick around for the answer.
 
Here is your answer

 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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