Word: weightlessly
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...make the Agena ignite a second time called for tricky engineering. A second charge of solid propellant to restart the turbopump was comparatively simple. But since the rocket would be fired while in orbit, when everything on a satellite is weightless, the fuel might be anywhere in the partly empty tanks-perhaps gathered in a ball in the center. To coax it into a position where the pumps could get hold of it, two small, solid-fuel rockets are fired, giving the main rocket a slight forward push. The fuel responds momentarily as if to gravitation, settles to the rear...
Molecular electronic units were developed under a $2,000,000 Air Force crash contract, with an eye toward their use in ballistic missiles and space rocketry. Besides being almost weightless and requiring almost no power to operate, the units promise to be much more reliable than conventional electronic circuits, because they have no internal connections to be jarred loose...
...heart will double its normal rate. The instruments before his eyes fade from view in a brown haze. The feet and arms are now difficult to move because they are eight times heavier than normal. Consciousness clouds, and for a moment he will wait in heavy, silent oppression. Weightless World. Then his body will become suddenly light, as the rocket burns out at last, and he commences the fall toward the center of the earth that will continue for 4^ hours. He will have dropped, as if over a precipice, into a still and weightless world. He will feel...
...force of the sun's light is extremely small-9X10-5 dynes per square centimeter, or about the weight of four cigarettes per acre of surface at the distance of the earth. But it is free and unfailing, and in the weightless, placid vacuum of space, large, frail sails might be spread to intercept it. For a starter, Dr. Cotter would like to try a 50-lb. space sailer. Once launched in the usual way to an orbit around the earth, the satellite would sprout a circular sail of thin plastic coated with shiny aluminum. If the satellite...
CHRIST walked the earth as a human being; yet for 13 centuries thereafter he was painted as a weightless, spiritual being, more in his divine aspect than in his human one. Then Giotto di Bondone, a Tuscan farmer's boy, broke the spell. He changed the course of art by proving that spirit and flesh, holiness and reality, could be pictured together as one image...