I believe that it would depend on the device. If the device requires alot of power to function, then it may have effects on the surrounding area. If is operational without alot of power, then it might not create as much of a "foot-print".
As far as the specific physics, there are others here better suited to answer your question than myself, although we are discussing a device that is theoretical and requires "some" numbers to even begin to develop any kind of mathematical equation(s) that would define in scientific terms possible effects.
Since it is a theoretical device, it seems to me that there is too much missing to formulate anything specific about any magnetic disturbances, or gravitational anomalies.
You say you need to know, perhaps, expanding on this, might provide a better foundation for a more accurate and/or appropriate answer to your question.
""We tried a desperate game and lost. But we are tough men used to tough ways, and we have to abide by the consequences." -- Cole Younger
As far as the specific physics, there are others here better suited to answer your question than myself, although we are discussing a device that is theoretical and requires "some" numbers to even begin to develop any kind of mathematical equation(s) that would define in scientific terms possible effects.
There is already math to define the scientific terms of possible effects of matter and energy...
I figured there are equations already, however, without "any" numbers, renders even the best formula kind of moot.
To Daxel:
I don't know what kind of repoire you have with your neighbor, however, if he was burning out my stuff, I think I might want to have a discussion with him regarding his experiments.
I would first try to speak to him, personally, and perhaps you can interest him by enticing him with a similar interest's. If he is difficult to speak with, I'd send him a letter.
As far as any energy spilling out across onto your property, if possible to acquire, could be measured by an EMF detector, as seen on the Ghost Hunting Shows.
Perhaps walking around with a compass might also be interesting to see how the needle reacts, and to determine if it is indeed magnetic fields that are being effected.
Also, I don't know if you have access to view his electrical meter, but it would be interesting to see what his meter is doing while he is conducting his experiments. IF and only IF it could be done safely, as in him not noticing you looking.
If he avoids you completely, and is nasty, I'd build the biggest damn Tesla coil I could afford and hit the ON switch as close to his "workshop" as possible, while still on my property.
It really boils down to how badly you want to know, and how far you are willing to go to find out.
Holy Cow, Reactor ! Seems as though I'm reading from the pages of P.M.J.B. or An.Co. , or some other book available from P.P. or through S.O.F.
I don't know if I'd post "that" kind of stuff on "this" site.
I think I'd do everything possible to "get-along" with the neighbor, not cause a micro-war.
I don't know if you live in the country, but anyone entering private property is viewed with suspicion as it is, and armed with what you included in your post, would rightfully get you gunned down here in this part of Texas.
Out of curiosity, Reactor, do you know what the initials of the publications and publisher whom I referenced ? A PM would suffice, as some folks in these parts of the woods, might not be 'capable' of obtaining the above mentioned articles without blowing themselves up.
keep in mind though, that drm still works, even if the file is a torrent.
recently i downloaded a videogame torrent, grand theft auto 4. to my surprise, i woke up the next day with a blocked internet connection. they wouldnt even restart my connection until i deleted the file.
the worst part about it was, i had a liscense for the game. i just didnt feel like waiting on the mailman to bring me mah game.
i have also downloaded many trojans from p2p networks and bittorrents, so be careful and make sure you have an awesome antivirus.