Hematite is a magnetic metal

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quasar987
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Hematite is a magnetic metal and a small amount of it can produce fields up to 600 gauss (http://cgi.ebay.ca/MENS-JEWELRY-MAG...029171967QQcategoryZ10297QQrdZ1QQcmdZViewItem). How many gauss are necessary to damage things such as a computer screen, TV screen... What are other items that are suceptible to be damaged by magnetic fields? What about digital atches?
 

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Astronuc
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Well my son has managed to hose our TV screen with some small magnetic wands - but I don't know how the field strength.

We had the screen degaussed.

Possibly credit cards or anything that has magnetically stored information could be harmed by a strong magnetic field.
 

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