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mikewarot | on: Amplification of electromagnetic fields by a rotating body
So, if you use eddy currents to delay the phase of an exciting field long enough that the object those eddy currents are inside of can spin more than 90 degrees, the response eddy current fields now AID instead of opposing the original field?

This sounds quite a bit like what Steorm[1] was doing years ago. If ultraconductors[2] worked, you could actually build a mechanical device that had losses low enough to actually gain energy once a critical speed were obtained.

[1] https://en.wikipedia.org/wiki/Steorn

[2] https://patents.google.com/patent/US5777292A/en

(Claim 7 is for material with a conductivity of 10^11 S/cm, which is 150,000 times better than copper)

mmastrac | parent | next
> This sounds quite a bit like what Steorm[sic] was doing years ago

Steorn was a scam, and they never actually showed anything off. The only thing they did was rob some investors.

Terr_ | parent | next
> If ultraconductors[2] worked, you could

Not familiar with that idea, but this construction sounds a bit like: "If only you had an (infinitely) rigid rod, you could push one end to communicate faster than lightspeed."

Or in balder terms: "If only we had a subtly impossible component, we could make a blatantly impossible machine."

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hi_hi | parent
So a perpetual motion device!?