4 ms·
Ever see an electromagnet crane at a junk yard? https://youtube.com/watch?v=XBWy9gzGGd4&pp=ygUVZWxlY3Ryb21hZ25ldGljIGNyYW5l https://youtube.com/watch?v=XBWy9gz
by rUsHeYaFuBu 2y ago
Ever see an electromagnet crane at a junk yard?
https://youtube.com/watch?v=XBWy9gzGGd4&pp=ygUVZWxlY3Ryb21hZ25ldGljIGNyYW5l https://youtube.com/watch?v=XBWy9gzGGd4&pp=ygUVZWxlY3Ryb21hZ...
You can make one yourself with a nail, some copper wire, and a battery.
- swayvil 2y agoThat's pretty darn far from what we're talking about here. The comparison is absurd.
- rUsHeYaFuBu 2y agoHow so? It's literally an invisible (to the eye) field that can lift hundreds of pounds. And magnetic fields are directly related to electric fields. It's called electromagnetism for a reason.
- function_seven 2y agoOf metal, yes. That's not what we're talking about here. We're talking about force fields in the sci-fi sense. An invisible wall that a person can't pass through.
- rUsHeYaFuBu 2y agoThe article is about an electrostatic field. That's far from sci-fi. https://en.wikipedia.org/wiki/Electric_field https://en.wikipedia.org/wiki/Electric_field
- function_seven 2y agoI was clarifying the sense I was using the term "force field". Not a generic field of electromagnetic forces, but the fantastical one that can contain arbitrary matter. Like the one described in the article, that a person was leaning against and could not pass through. If this were something that we could reproduce, it would have awesome real-world uses. Like a real hover board! Or the best anti-theft protection for my parked car.
- rUsHeYaFuBu 2y agoYou could though. Given a sufficiently strong enough positively (or negatively) charged electric field and yourself equally positively (or negatively) charged sufficiently you could have an 'invisible' wall that you couldn't walk through. Assuming that neither yourself or the field you're walking into has anywhere to discharge to.
- dyauspitr 2y agoCan an electromagnetic move organic material?
- rUsHeYaFuBu 2y agoIf it's strong enough, probably. I mean, MRIs kind of work that way.
- SigmundA 2y agoYes the 45 Tesla magnet in Tallahassee can levitate small non ferrous things like a strawberry in a little tube and draws 56 megawatts about 7% of the cities power grid.
- kragen 2y agoProbably not in a useful way; the induced currents would produce far too much heat.
- jhgorrell 2y agoExtremely powerful fields can levitate a frog - so yes. https://news.harvard.edu/gazette/story/2024/04/how-did-you-get-that-frog-to-float/ https://news.harvard.edu/gazette/story/2024/04/how-did-you-g...