If electricity is unsuitable or unavailable, magnets can be used to introduce a magnetic field into the fluids.
Magnets can be used to introduce a magnetic field into the fluids. If electricity is unsuitable or unavailable.
If electricity is unsuitable or unavailable. Magnets can be used to introduce a magnetic field into the fluids.
If electricity is unsuitable or unavailable. Magnets can be used to introduce a magnetic field into the fluids.