1. Sep 1, 2005 #1

   quasar987

   

   Science Advisor

   Homework Helper

   Gold Member

   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?

    

   quasar987, Sep 1, 2005
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3. Sep 1, 2005 #2

   Astronuc

   

   Staff: Mentor

   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.

    

   Astronuc, Sep 1, 2005

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