InnerworldMar 14

Palm-sized magnet reaches 42 tesla, approaching the strength of the world’s most powerful magnets while using a few thousand times less power and over 1,000 times smaller coil volumes

https://lemmy.world/post/44270260

Palm-sized magnet reaches 42 tesla, approaching the strength of the world’s most powerful magnets while using a few thousand times less power and over 1,000 times smaller coil volumes - Lemmy.World

Lemmy

Show thread∟⊔⊤∦∣≶
This has huge implications. If this can be mass produced, it will change the world in ways we can’t imagine
Mar 15 at 12:30amWeb
Show threadSkybreakerEngineerMar 15
Still requires liquid nitrogen
Show threadikiddMar 15
Well, we can’t make that. Too bad. Sounded useful.
Show threadCaptain AggravatedMar 15
To make, or to use?
Show threadWrufieotnakMar 15

Using it. Those magnets depends on superconducting, which is only possible at low, really low temperatures (often close to absolute zero at 0K). Also the energy that generates the magnetic field also generates a lot of heat. So we cool those magnets with liquid nitrogen.

Also the problem isn’t the liquid nitrogen but rather the liquid helium that is needed to reach the really low temperature ranges. Because helium is more scarce and expensive.

Show threadRobotToasterMar 15
It’s described as “high-temperature superconducting” in the article, so “only” needs liquid nitrogen