magnetic field *
magnetic flux
flux

All he had to do was cut the magnetic field.

He is known for his work on the Earth's magnetic field.

I'd like to know what happens to the magnetic field.

You see, it killed by some sort of magnetic field.

This behavior may be the result of a magnetic field in the star.

Light, he added, has no effect on a magnetic field.

There would not be a magnetic field within the ball.

Only the specific features of the earth's magnetic field will be different.

I couldn't set up a magnetic field that powerful myself.

The magnetic field at the surface of the earth is about 0.5 G.