One side of both shell and core are split for the purpose of obviating residual magnetism.

Only here we must have just a little residual magnetism in the field magnet to start the whole process.

In the library's work the residual magnetism is represented by the latent interest in ideas that is present in every community.

Like Mars, Titan may once have had a liquid core that has since frozen, leaving behind residual magnetism in the crust.