[sargon]

Harold G. "Sonny" White, who investigates field propulsion at Eagleworks, NASA's Advanced Propulsion Physics Laboratory, speculated that such resonant cavities may operate by creating a virtual plasma toroid that could realize net thrust using magnetohydrodynamic forces acting upon quantum vacuum fluctuations.[20]

After reading that, I was suddenly reminded of the thrusters allegedly being used by these "top-secret" TR3 craft, which supposedly have some kind of propulsion using mercury plasma accelerated in magnetic fields to extremely high speeds, and even producing some kind of relativistic mass-reducing effect along the way.

I wonder if this Emdrive could be tangentially related to that sort of propulsion?

On another note, it would be very odd to see this technology developed successfully, and go into widespread use, all the while with no scientific explanation for why it works!

Interesting times...

[marktwain]

Most of technology had no scientific explanation for “why it works” for most of history.

[tet68]

I find it interesting that it’s termed an “artifact”...
Could there be such a thing?
Yes, there could...que guy with crazy hair.