Questions about magnets.

[jdiwnab]

Originally Posted by Elgin Clock

What is the strongest pole?

Neither is stronger. The strength of a magnet is based on the material, the size and somewhat the age. If you took a bar magnet and a Guassmeter (measures magnetic field intensity. 10,000 Gauss=1 Tesla=very strong magnet. 500 is fairly strong), you will see that the N end will have approx the same value as the S end (but one will be negative). Around the middle, you will have nearly 0. The sensor I was using for a science project regularly read about -1.7 Gauss (I guess Earth's magnetic field) and went up to about -+ 100 gauss with the really weak, old magnets the school had.

If you can find an old microwave, then you could find some very strong ring magnets in the "MAGNETRON" (that is really what they are called). I measured one and was getting about -+800 gauss