If the ions and electrons have similar temperatures, then they also have similar, though oppositely directed, drift velocities.

Definition- A couple is a pair of forces, equal in magnitude, oppositely directed, and displaced by perpendicular distance or moment.

Magnetic reconnection is the name given to the rearrangement of magnetic field lines when two oppositely directed magnetic fields are brought together.

This rearrangement is accompanied with a sudden release of energy stored in the original oppositely directed fields.

For relativists, examining the quadrant as the possible future between oppositely directed photons, the geometric mean parameter is temporal.

The stationary wave can be viewed as the sum of two traveling sinusoidal waves of oppositely directed velocities.

Until then experiments had been carried out using oppositely directed lasers as a means to trap particles.

In addition, oppositely directed edge states carry opposite spin projections.

As these metals go superconducting, electrons with oppositely directed spins couple to form singlet states.

Oppositely directed, the nuclei had no net momenm in the laboratory.