Based on the context and the answer, generate a question. 

Context: I was bored , so I thought I 'd take apart a guitar humbucker I had lying around , and test its magnetic polarity . To do this , I took a fridge magnet , and test which end would repel it . Turned out , there was no end of the pickup magnet that repelled the fridge one . I tried everywhere on all six sides , and I did n't even notice any difference in the degree of attraction .

Answer:

They did experiments to try and figure out why .



What may happen after they noticed the magnet would not repel ?