There are theories around that some birds can actually detect magnetic fields, which they use to navigate on long migrations.
The magnetic field. If it's an electromagnet, the electromagnetic field.
a magnetic field
Albert Einstien was the first to detect the presence of magnetic field in earth
A lodestone is magnetized and thus produces a magnetic field around it. This can be detected by the deflection of a compass needle.
I believe you are looking for magnetic field. Although it is not exactly space.
In that it has a magnetic field - which can be detected by a compass needle.
Well you could either directly measure the magnetic field produced by the electromagnet. Something as simple as a compass shows the presence of a magnetic field. Or you could measure the electric current induced by the magnetic field.
In that it has a magnetic field - which can be detected by a compass needle.
In that it has a magnetic field - which can be detected by a compass needle.
Because the intrinsic magnetic field generated by the spin of the electrons around the nucleus is negligible...
Science is not completely sure, the eyes is a resource and the magnetic field is another one.
magnetic field to attract opposite sides of another magnet