Where Can I Buy Strong Magnets?
Strong magnets can be used for several things, from do-it-yourself crafts, to chemistry projects. A normal strength magnet is strong enough to hold a single piece of paper to the refrigerator. Strong magnets, however, are powerful enough to hold a 1/4-inch thick stack of 3-by-3-inch sticky notes to the refrigerator, or 20 pieces of notebook paper. Scientifically, magnet strength is measured by voltage produced within a magnetic field. Tesla is the unit measure of flux density, found in magnetic fields. A regular magnet measures .001 Tesla, while a strong magnet measures 10 Tesla.
