An electric charge can have either positive or negative polarity.

Clampers can be constructed in both positive and negative polarities.

He gave them positive polarity, male, projective gender, a speed of 186,000 miles per second, and matter in the form of charged particles.

Magnetism is not the causal force, but is the result or exhaust effect of light forces of positive and negative polarity in action.

Nothing can come into it or go out through it without conforming to its positive polarity.

The result is a positive polarity at the fish's head relative to the tail, or vice versa: a dipole system.

Direct current of either polarity, positive or negative, can be used to weld aluminum and magnesium as well.

The spin of an entity in quantum mechanics has a polarity - positive or negative.

For analytic purposes, these can be cast into a binary model, suggesting positive and negative polarities of:

CG lightning can occur with both positive and negative polarity.