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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  • $\begingroup$ It is about physics! $\endgroup$ – neo7 Mar 3 '17 at 3:07

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.

  • $\begingroup$ Are you thinking of neodymium magnets? $\endgroup$ – Reds Oct 22 '13 at 11:37
  • $\begingroup$ Yes these were the ones. PS : no offence but the question is about red color and your user name is reds just kind of fits in. LOL $\endgroup$ – Rijul Gupta Oct 22 '13 at 11:41
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    $\begingroup$ @rijulgupta, please have a look at your spellings in the answer! $\endgroup$ – shortstheory Oct 22 '13 at 17:28
  • $\begingroup$ @shortstheory : I am using the site from a mobile, I am sorry if not all the spellings are correct. $\endgroup$ – Rijul Gupta Oct 22 '13 at 17:31
  • $\begingroup$ Haha, please have a look when you get back to a physical keyboard. $\endgroup$ – shortstheory Oct 22 '13 at 17:32

Probably because magnets have a negative charge, and the customary colour for negative charges is red

  • $\begingroup$ Magnets normally are not charged. $\endgroup$ – Ruslan Mar 3 '17 at 15:17

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