How Does Magnetic Putty Work?
Magnetic putty becomes magnetic when iron oxide particles are added to silly putty. The iron oxides magnetize the putty making it a million times more fun and entertaining than regular putty. When magnets are within range of the influence of its magnetic field, the putty will slowly swallow them. Because the magnetic field of the putty is strongest at the center of the blob, the magnets are engulfed. The putty slowly sucks magnets in until they reach the strongest point of the magnetic field.

Good to know:
https://nationalmaglab.org/education/magnet-academy/plan-a-lesson/magnetic-putty

Video:
https://www.youtube.com/watch?v=jIVplzQ3xIA

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