Remagnetising school magnets
From old to new - Cheap revival of magnets
Online since: 07/12/2012,
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Scholastic physics collections
Especially physics teachers will appreciate this application "Revival of old school magnets": Many physics collections in schools contain magnets that have lost their adhesive force over time. Buying new ones would be expensive, but you can use small and affordable super magnets to revive the old ones. How that works is explained below:Revival of old magnets
In order to revive older magnets we did the following: We placed 2 block magnets Q-10-05-03-N on each of the two pole surfaces and glued them on with an adhesive. (The super magnets also work on cylindrical and horseshoe magnets.)An amazing measurement
A quick measurement confirms: Instead of the original 14 mT the magnet now has more than 306 mT. Mission accomplished!
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