line of force
field line

Don't you see-it cut through the lines of force that start up the field out there.

The difference between the positive and negative lines of force is 16,000 miles per second.

She stretched her hand to me, setting up the primary line of force.

"Like you were a migratory bird following the Earth's lines of force."

The other universe is almost upon us now and the lines of force are just beginning to make themselves felt.

However, if given the chance, the compass will point down along the line of force.

The computer keeps us traveling along a gravitational line of force.

And the Chaga-cover began to flow toward the lines of force.

Each time I tried to follow a line of force, it seemed to dissolve.

I mean, lines of magnetic force have no physical reality, but they're there, aren't they?