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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?