do I need to keep permanent magnets away from any credit or debit cards?
You need a REALLY strong magnetic field to wipe out a credit card. A large neodymium magnet might do it.
Basically, I wouldn’t worry about it much.
I think the mythbusters did a segment about this, testing to see which size magnets could erase the magnetic strip on a card, and only the biggest baddest magnet could do it.
January 29th, 2010 at 4:36 pm
yea, i think you do/
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January 29th, 2010 at 4:56 pm
You need a REALLY strong magnetic field to wipe out a credit card. A large neodymium magnet might do it.
Basically, I wouldn’t worry about it much.
I think the mythbusters did a segment about this, testing to see which size magnets could erase the magnetic strip on a card, and only the biggest baddest magnet could do it.
References :
January 29th, 2010 at 5:32 pm
Yes, I would advise keeping credit cards away from magnets of all types. I am in AP Physics at the moment, and we have done experiments testing this. Mythbusters HAS been wrong before, and they are here.
It depends on the cardmaker, but in most cases, magnets will DEmagnetize the strip on a credit/debit card, making the card practically useless.
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AP Physics
January 29th, 2010 at 5:37 pm
Yes, but if it’s not a very strong magnet, it might take a long time.
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January 29th, 2010 at 5:55 pm
It depends on how strong the magnet is but in general I would keep credit/debit cards away from them. You don’t want to find out they’ve been affected at the register!
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