These magnets are superior for demonstrating magnetic properties. They clearly repelled when like poles were placed near each other and attracted when opposites were together. They clearly depicted a magnetic field when placed on the acrylic frame with iron filings suspended in mineral oil. They are not marked with N and S, but a dot indicates like or unlike poles so that you could have a mystery or just note a convention labelling.
SARGENTWELCH.com associatePublished 11/14/2017
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Alnico Bar Magnets
Alnico bar magnets are useful for classroom or lab experiments.
Perfect for lessons involving magnetization
Each magnet has permanently marked poles
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