Once they get big enough, their gravitational fields will exert a major force.

A key difference is that the gas molecules are neutral, unlike the electrons, so the magnetic field exerts no Lorentz force.

Electromagnetic field produced by the craft exerts force against conductor molecules in the water.

In this case, there are no charged currents in the solid so the magnetic field cannot exert a Lorentz force.

The magnetic field exerts a force on all magnets including, for example, those used in compasses.

The stray field from the sample exerts a force on the magnetic tip.

For example, fields of color exert influence on each other.

The Jovian magnetic field exerts an influence out to near a surface called the magnetopause.

The moon's gravitational field exerts tidal forces on our oceans.

If only one cell in a million contains magnetite, he said, magnetic fields could exert an effect on the tissue.