Physiker haben einen ultrastarken Magneten hergestellt, der in eine Handfläche passt und ein Magnetfeld erzeugen kann, das mehr als 800.000 Mal stärker ist als das der Erde.
https://www.nature.com/articles/d41586-026-00851-y
Physiker haben einen ultrastarken Magneten hergestellt, der in eine Handfläche passt und ein Magnetfeld erzeugen kann, das mehr als 800.000 Mal stärker ist als das der Erde.
https://www.nature.com/articles/d41586-026-00851-y
22 Kommentare
Sounds terribly unsafe. The magnets used in MRIs have caused many deaths when people accidentally or negligently brought ferromagnetic substances close to them.
If the Earth’s B field is about 40 μT then this means they have a magnet of about 32 T in their hands.I guess it’s microscopic?
Earth’s magnetic field isn’t actually that intense or powerful. It’s just very large. I’d argue It’s more impressive that even despite the low strength it’s enough to block a lot of solar radiation.
A fridge magnet is 100x stronger.
Earth’s magnetic field is a terrible comparison, its effect is negligible in day to day life unless you’re using an oldschool compass. A standard neodymium magnet is 4 orders of magnitude stronger than the Earth’s magnetism. A fridge magnet is a couple hundred times stronger than the Earth’s field.
https://www.stanfordmagnets.com/how-strong-are-neodymium-magnets.html
Where is thinkgeek when you need them?
So if they produce enough of these I can stop worrying that 2003’s The Core will become reality?
Will we finally get hoverboards?
Just because you can fit it in the palm of your hand doesn’t mean it’s a good idea. People are already advised not to hold modern rare earth magents in their fingers near anything metallinc or another magnet. This one sounds like it would break every bone in your hand.
tl,dr: „It would also set your hair on fire, so don’t actually do it.“
gimme one. wanna be a super villain
Maybe technology like this could be used on manned Mars missions to shield astronauts from cosmic radiation.
So how many pounds/kilo can it lift? Can it be used for magnet fishing?
As a neat feature it will also fit through your hand when close to ferrous metal.
Sounds dangerous. Where can I buy one?
Neodymium magnets already make my hand feel odd, can’t imagine holding something with an even stronger field.
Since I’m too cheap to pay for the article, I googled it and if the AI summary is to be believed, these magnets don’t require rare earth minerals which makes them a much bigger game changer.
I’ll need a banana’s magnetic field for scale.
The power of the magnet… In the palm of my hand
This means stronger and lighter electric motors as well as more efficient generators.
Anyone have a non-pay walled version of this?
Human infants defeat earth’s gravity
This will be the key to defeating the clankers when they enslave humanity
The paywalling of science is truly out of control. Opening this link I am not greeted with a press release or even an abstract. I can see *one sentence* before the invitation to subscribe pops up. No details of the technology or the underlying physics, no information about the research team, nothing. „Physicists did something amazing, now give our parasitic journal company your subscription money.“
But if you’re observant you can find the link to the paper hidden at the bottom:
https://www.science.org/doi/10.1126/sciadv.adz5826
It’s a miniaturized cuprate superconductor electromagnet.