gravity n.

Each man seemed laboring under the load of three gravities and four gravities as the ships flashed on at ever higher speeds.

We can develop an acceleration of ten earth gravities either forward or backward, and more if the human body will stand it.

We were about eigth [sic] thousand miles up then and we let her out on six gravities with the idea of squashing some of the liveliness of Leach ans [sic] son.

It was accelerating at almost five gravities—and it had broken its radio silence.

The track surely could not be a ship; ships don’t decelerate at fifty gravities! It did not occur to him that that might not matter to a slug.

The frightful acceleration continued. It was at least five, possibly six gravities.

Two gravities! Twelve hours ago, he would have sneered at himself. Two gravities, lying on his back? He could have done it on his head. But that was twelve hours ago, twelve hours of double weight and throbbing metal and noise and no sleep…. It would be a day and a half before ship weight returned to normal.

I’ll exercise in three gravities, and I’ll sleep in two, and I’ll make this body last. I know I can.

‘A Verne gun fires its cargo into orbit in a single shot,’ Egorov had told Gennady. ‘It generates thousands of gravities worth of acceleration—enough to turn you into a smear on the floor.’