He nods toward the pass ahead, where a trio of dust devils are whipping together into a single large vortex.

The map indicated a number of other large gravitational vortices up ahead, therefore I could count on the duplication of the present within the next few days.

Gift-giving for weddings, birthdays, bar mitzvahs and the like requires ever-more expensive presents, sucking an age-old practice "into the larger vortex of consumerism."

The energy of the large vortices are, by this method, is transferred to much smaller isotropic vortices.

A discovery of the second large 'double-eyed' vortex at the south pole of Venus was made in the summer of 2006 by Venus Express, which came with no surprise.

This ignores the effect of dynamic stall, an airflow separation inducing a large vortex above the wing, which briefly produces several times the lift of the aerofoil in regular flight.

A mother's curse is a blinding black explosion and a large vortex.

When the two vortices are of unequal size, the larger vortex will tend to dominate the interaction, and the smaller vortex will orbit around it.

In 2007, very large vortices on both poles of Venus were observed by the Venus Express mission of the European Space Agency to have a dipole eye structure.

Vortices are a primary cause of drag in most aircraft, and the large vortices generated when using vortex lift cause correspondingly high drag.