In addition winged vehicles need extra dry mass for the wings, and this penalises vehicles towards the end of the flight.

"For global business, they need critical mass."

We need critical mass.

Mr. Schuckman, the Woodbury broker, said newcomers need "critical mass" to enter a new market.

"You don't need hidden mass, because you don't need to close the universe," he said.

Killashandra was not a tall or heavily boned woman: cutting crystal does not need mass, only controlled energy, and that could be developed in any arm.

The boys need high mass, incense and altarboys.

Northwest "badly needs critical mass to compete with the big guys," said Ernest Arvai, a leading industry consultant.

"They need critical mass and market share," he said.

But Spock said the planetoid needed significant mass in order to create a magnetic field.