Metals near a magnet you can feel the attraction just floating there but when they make direct contact the attraction becomes significantly stronger like a stalker finally catching up with you.
Metals near a magnet you can feel the attraction just floating there but when they make direct contact the attraction becomes significantly stronger like a stalker finally catching up with you.
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This is so hard to explain in simplistic terms but basically it’s the ferritic particles in the metal that create a bond in the magnetic field where there is no resistance .. when they are separated there’s the resistance of air , pressure or whatever is stopping them from attracting
Its not that its touching, its that its close. the closer the magnet gets the stronger its pull.
You cant get closer than touching. and this is “squared” so as you get a little bit closer, the force increases by quite a bit.
Many forces in nature depend on distance in some way: if you stretch a spring, the force becomes bigger the bigger the distance.
For a magnet and metal: if the distance becomes half, the force becomes sixteen times stronger. If they are apart by 1 m the force is tiny, and putting them at 0.5 m will cause the force to be 16 times bigger: not so big. But repeat this 10 times, and the distance is about 1000 times smaller, about 1 mm, but the force is 16 × 16 × … = One trillion times stronger.
And why? We ultimately don’t know. We have just noticed that this is what happens.
EDIT: Replaced 8 with 16. The inverse law is not cubic, but quartic, for a dipole-dipole interaction. I think?. I think that a dipole is induced by the magnet. Someone correct me…
The force of a magnetic field increases the closer the two objects are. It feels stronger because it is.
I’m fairly sure it’s not linear, which makes it feel even stronger.
Gravity is the same, as are many other forces. We just don’t experience it in every day life so never notice.