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The problem is that these things are measured in units you've probably never even heard of before.

The most powerful superconducting magnets have field strengths of perhaps 20 T (tesla) or so, while a typical refrigerator magnet might be more like 5 mT. And that almost certainly leaves you just as clueless as you were before.

A tesla is a kilogram per ampere per second per second, which most likely still doesn't help. It doesn't really help me, at least... I know, intellectually, what a tesla is, and I have some frame of reference (I used to work with a 4.7 T magnet all the time), but "kilogram per ampere per second per second" is not something I can easily picture in my mind. "Webers per square meter" (also equivalent to tesla) is a little better... if you can wrap your mind around what a weber is (a volt-second).

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13y ago

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