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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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A magnetic question
Tinkering around with coils and magnets, motors and stuff got me thinking
( Ouch that hurts)!! I noticed how easy some Alnico magnets were weakened by being amongst some stronger magnets. So my curiousity question is : where does this magnetism go? does it make the other magnets stronger? Thanks to you guru genius people out there. Regards, David |
#2
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A magnetic question
"David Sewell" writes:
Tinkering around with coils and magnets, motors and stuff got me thinking ( Ouch that hurts)!! I noticed how easy some Alnico magnets were weakened by being amongst some stronger magnets. So my curiousity question is : where does this magnetism go? does it make the other magnets stronger? Assuming the strong ones are rare earth magnets, they don't get weaker (at least not significantly) in demagnetizing the ALNICO magnets. Think about what was happening when you brought the magnets together. What you had to do, what the magnet had to do, etc. More thinking, yes it's a strain on the brain. --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#3
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A magnetic question
"David Sewell" wrote in message ... Tinkering around with coils and magnets, motors and stuff got me thinking ( Ouch that hurts)!! I noticed how easy some Alnico magnets were weakened by being amongst some stronger magnets. So my curiousity question is : where does this magnetism go? does it make the other magnets stronger? If you are thinking conservation of energy, it does not apply here in any easy to explain way. Magnetization is a special arrangement of magnetic domains (dipoles). A strong external field can rearrange the domains (dipoles) of a permanent magnet and weaken it or even obliterate it (return the domains (dipoles) to a completely random alignment). This is a complex subject and the above is simplistic, but short and to the point. |
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