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
Because the distance matters a lot. A magnet’s effectiveness decrease sharply by distance, and earth’s magnet is much more powerful – it’s just buried deep inside the earth’s crust.
A good example would be a flashlight. Sure it would be much brighter than stars in the night sky if it’s right in front of you, but that does not mean it actually is. You put them at a same distance and it’ll be very different, just like the case of magnet.
Strength and size is not the same thing. Put that compass next to any magnet and it will point towards it, but a small magnet that fits in your hand isn’t going to have a particularly large magnetic field, even if it’s very strong. Earth’s magnetic field isn’t particularly strong (at least on a small scale), but it’s the size of the planet.
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.
Compasses do point to those magnets if they’re close enough. Most of the time, if you’re looking at a compass, you’re not close enough to such a magnet.
Well it does. If a magnet is close to a compass and has a stronger force than the compass will indeed point to it. But since earth’s range covers the earth(and space through ions) compass will point to it every other time
I present you:
The most powerful known magnet in the universe
https://en.m.wikipedia.org/wiki/SGR_1806%E2%88%9220
I’d also like to mention that those ultra strong magnetic fields are being compared to Earth’s magnetic field, as if we aren’t about 3000 miles away from that magnet. The actual strength of the Earth’s magnetic field makes everything we can create look like a rounding error, unless we’re measuring from about a million times closer.
The super strong magnet is like a modern ultra bright LED flashlight. It is extremely bright if you are within feet of it. But from miles away, it would hardly be a speck of light.
The Earth’s magnetism is like an array of a trillion dim incandescent 1980s flashlights that are spread far out from each other. From a few feet away, those individual bulbs are dimmer than the LED bulb. But from miles away, you can still easily see the giant array of dim bulbs combining their light together.
Your fridge magnet is much stronger than earth’s magnetism, use one near a compass and you will see.
A magnet’s RANGE is based on its strength, but also it’s size.
Earth’s magnetic field is super weak, but since size also is a factor in range, it’s range is global.
You are simply out of range of that huge magnet.
(Doubling your distance from a magnet Quarters it’s power on you. If you’re near that super magnet, walking away will quickly make it’s power almost 0 on you, however, good luck doubling your distance from earth’s core.)
Well all magnets on earth are magnetized by the Earth which means. You guessed it,the Earth is the biggest strongest magnet on Earth.
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