4 ms·

Thanks. I would still be curious to know how the strength of an artificial magnetic field at a range of say 10 km compares to the order of magnitude of local va

by tomsto 3y ago

Thanks. I would still be curious to know how the strength of an artificial magnetic field at a range of say 10 km compares to the order of magnitude of local variations they are talking about in the earth’s magnetic field.

oldbbsnickname 3y ago
Make some assumptions, find the relevant equations, and plug in the numbers. https://en.wikipedia.org/wiki/Magnetic_field https://en.wikipedia.org/wiki/Magnetic_field
eternityforest 3y ago
IIRC I think there was a telephone system with giant magnetic coils that went a quarter mile, but maybe I read a blog wrong or something. In any case it wouldn't be as portable and would make you rather easy to detect I would imagine, if you wanted to cover a large area.