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.
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There is a difference between total magnetic flux, and magnetic flux density.
High strength magnets in things like MRI machines have very “dense” (strong) magnetic fields. They have lots of flux through a small cross section. But they are still small compared to the Earth, so the field strength drops over a short distance.
The Earth has a comparatively weak magnetic field. There is very little flux through any similarly sized cross sectional area. But the Earth is much bigger, so the strength drops off over a much longer distance scale.
To really understand why/how field strength decreases with distance, you need to understand maxwell’s equations, which needs some calculus (divergence and curl) to get a good intuition for the shapes of electromagnetic fields.
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