Also does anyone know how those ultra strong magnets are affecting our planet if at all?
Edit: sorry the [link](https://imamagnets.com/en/blog/what-is-most-powerful-magnet/#:~:text=The%20world’s%20most%20powerful%20magnet%20is%2044.14%20Teslas.&text=This%20super%20magnet%20has%20a,we%20find%20in%20a%20hospital) says 900,000 times the earths magnetism
Edit 2: Thank you wonderful people for clearing that up. Your minor support did more for my mental health than you realize not just for the knowledge but also the general support from the community. Y’all are amazing.
In: 2748
The earths “magnet” is nearly the size of the earth. That is why it’s felt everywhere at about the same strength.
Generally the magnetic field of a dipole drops off at a distance about the length of the dipole. So magnets we make on earth will be much smaller and drop off rapidly. If you are close enough it will effect a compass but as you move away from it drops off fast.
In edition to this most magnets designed to give a strong field will have “flux return”. This is additional material like iron that will contain the magnetic field and help the field lines return to the magnet faster and concentrate the field so it’s stronger. A side effect of this is that the stray field outside the magnet is basically zero. So the strongest magnets actually have very little stray field outside of the place they want the field to be strong.
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