electrically

So it's a new point of confusion - USB devices which are physically compatible but not electrically.

Concerning the moving piston: Rather than have a moving plane, they could be using stacked, electrically-switchable films.

Though, to some extent you could drive an alternator and generate electricity to run electrically powered tools.

No, so long as it is electrically completely enclosed, signals won't get in or out.

You won't be seeing that sort of performance from an electrically powered helicopter without some drastic improvements in battery power density.

Except then you need 125% (at 80% efficiency) of that energy from another source handy in order to split the water electrically.

We definitely won't be seeing any passenger aircraft electrically propelled anytime soon.

Then you can electrically break down the carbon dioxide into oxygen.

Subsequently, in 1976, the US Army employed an electrically pumped HEL to destroy a number of winged and helicopter drones at the Redstone Arsenal in Alabama.

If you're mechanically and electrically inclined, it's more than feasible.

Making it physically impossible for something to listen is reasonably straight forward if you control the hardware, and you can easily additionally electrically isolate the networks.

The second document[2] is for electrically powered snow melting.

Electrically, everything's built around a round "central" PCB using a custom interconnect.

We would take a day to "go downtown" and hop on the local electrically powered trollybus, pay some minimal fee and get a comfortable ride from suburbia to city.

That's like saying "people with the phlostigon mindset will not be able to electrically insulate your house." Of course they won't, but why are you letting them touch your house in the first place?

Electrically-powered commuter trains are more efficient movers of people than automobiles, but the capital requirements are such that you need a minimum population density to run the train profitably.