Wy are lab magnets painted red in color? I tried searching everywhere but couldn't get a satisfactory answer.
closed as off-topic by tparker, Kyle Kanos, Jon Custer, Yashas, AccidentalFourierTransform Mar 3 '17 at 18:36
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Isn't it just a convention ? And are all the laboratory magnets around the worle painted red ?
I would agree with you that mostly they are painted red as i once bought a lot of laboratory bar magnets made of AlNiCo all of them were painted red while same was not true when I bought some higher power loadstone magnets they were simply in their original state (no paints and blackish) electromagnets are not painted at all as well. Some extremely good permanent magnets I don't remember what they were made of, but they were round and very powerful were finished in silver.
Maybe it is a convention which makes nearly all the permanent lab magnets red, but I can assure you that not all of them are red.
Probably because magnets have a negative charge, and the customary colour for negative charges is red