Brian Cassity, the other co-author of the 60's book and a professor of history in the University of Hawaii system, said it was tough to balance levity and gravity.

The cosmological constant was first proposed by Einstein as a mechanism to obtain a stable solution of the gravitational field equation that would lead to a static universe, effectively using dark energy to balance gravity.

And the final movement, played with wonderful fleetness and clarity, beautifully balanced the qualities of lyrical grace and autumnal gravity that run through thes entire work.

It floated through the air, was slowed by skillfully balancing air resistance and gravity, and finally made to come to rest above the spaceport.

Finally she remembered Tom's technique of wedging the toes and palm and just finding a friction point to balance gravity.

But unlike Weill, who immigrated to America and defiantly rejected the European tradition in favor of Broadway and show tunes, Mr. Gruber clings to the desire to balance traditional gravity and pop friskiness.

Initially, the cores of red-giant-branch stars collapse, as the internal pressure of the core is insufficient to balance gravity.

The force from below is greater than the force from above by just the amount needed to balance gravity.

But he didn't care, as long as he could actually stand up without losing his balance, and already he was doing just that, balancing the two main forces, speed and gravity, as the thruster sliced diagonally across the wave.

Capillary action provides the force that establishes an equilibrium configuration, balancing gravity.