However, the animals found that it was much harder to move across the magnetic field lines than along them.

Consequently, the magnetic field lines are wrapped by 20 percent every 27 days.

They travel on magnetic lines of force that are strung out around their home system.

They were now on a strong, wide magnetic line.

Nobody has ever discovered a magnetic field line that doesn't form a complete circle, though many scientists have tried.

This means that the magnetic field lines must be closed loops.

One often say that the magnetic field lines are frozen into the plasma.

Bands did not do this; they rode only on magnetic lines.

In many ways, they are not unlike magnetic lines.

Flux is the familiar magnetic field lines which push things around.