Amplification of electromagnetic fields by a rotating body

Could this be used as an engine of some kind? The spinny thing giving off EM waves and those waves are caught by something like a solar sail?

No idea, but "amplification", "electromagnetic fields", "rotating bodies", and "published in Nature" are the keywords that get all the UAP podcasters drooling.

Get ready for an onslaught of "Physics behind flying saucers LEAKED" clickbait coming to a feed near you. Whether any of it is actually applicable doesn't matter, the clicks must flow.

"Flying saucers are closer than you think, and all my bitterness about academia"

I'm picking up a lot of projection in this reply;

• To know what keywords get UAP podcasters drooling, you must have watched your fair share of UAP podcasts.

• Your comment is the only one so far to make the association between the article's keywords & UAP, implying that you are yourself making the same association that someone interested in watching UAP podcasts would be making, in which case..:

• ...what is the difference between you and the would-be viewer of the next UAP podcast you are warning away?

> • To know what keywords get UAP podcasters drooling, you must have watched your fair share of UAP podcasts.

They’ve been coming up on the front page of Reddit several times this year. I’m in agreement with the OP and I’ve only casually observed those threads

Even if your implication is correct (GP is a would-be viewer), doesn’t mean they’re wrong..

Perhaps in reverse (which should be equivalent, since Maxwells laws are time reversible).. rather than having waves amplified by stealing energy from the cylinder, waves could amplify the rotation of the cylinder.

“The fastest rotation achievable by standard motors is of the order of 10 kHz and a record of 667 kHz is reported for a millimetre-sized magnetically levitated sphere.”

From the spinning metal cylinder you can extract EM energy. It’s like a flywheel. The trick is how do you bring up the spin in the first place. The indication here is I guess that you can amplify the spin with EM waves.

“…depending on its rotation speed Ω compared to the field oscillation frequency ω, it can either absorb or amplify.”

Another confirmation. I see it in my /r/all list fairly frequently. I am neither subscribed, a reader of said posts, or a believer in any of that (or at least, i avoid belief until it feels there is reasonable supporting evidence).

Though i don't recognize all of the terminology of OP, so perhaps that disqualifies my observation.

Besides reddit front page, this stuff also appears in enough other pop culture podcasts and the occasional NYT expose that it's out there in the popular zeitgeist. Unfortunately, here it's just my science immune system flaring up on a random internet board.

Also, between the "could this be used for vehicles" parent comment and that downvoted interdimensional energy transfer comment below, it doesn't take a Aliens-Did-the-Pyramids Guy to see what dots were starting to be connected... I might as well be the one to flag it explicitly and earn some imaginary internet points.

But who knows, maybe I'm actually the goberment disinformation agent trying to keep all this under wraps...

ScholarlyArticle: "Amplification of electromagnetic fields by a rotating body" (2024) https://www.nature.com/articles/s41467-024-49689-w

> Could this be used as an engine of some kind?

What about helical polarization?

"Chiral Colloidal Molecules And Observation of The Propeller Effect" https://pmc.ncbi.nlm.nih.gov/articles/PMC3856768/

Sugar molecules are asymmetrical / handed, per 3blue1brown and Steve Mould. /? https://www.google.com/search?q=Sugar+molecules+are+asymmetr....

Is there a way to get to get the molecular propeller effect and thereby molecular locomotion, with molecules that contain sugar and a rotating field or a rotating molecule within a field?

At first glance, the concept appears to serve as the basis for a 'portable' magnetic field generator, which could be installed on an interplanetary spacecraft.

I have no exposure to UAP media but the first thing that came into my head was, “like some oddball theory of how a classic ufo works from the 70’s.” That and the send $5 for paper on the secrets of antigravity ad from the back of Popular Science magazine back then.

Definitely getting some giant magnetoresistence vibes - you know, that thing that (among other things) makes modern hard drives possible: https://en.m.wikipedia.org/wiki/Giant_magnetoresistance

Huh, so Unidentified Flying Objects have been renamed to Unidentified Anomalous Phenomena...

Or you could use an ordinary electromagnet.