The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 61
... heat . It can be produced at all power levels from that needed to boil a cup of water in five minutes to that re- quired to smash a city in a few seconds . There is no way , however , in which it can be used directly to provide a ...
... heat . It can be produced at all power levels from that needed to boil a cup of water in five minutes to that re- quired to smash a city in a few seconds . There is no way , however , in which it can be used directly to provide a ...
Pagina 90
... heat " ! For though the occasional hydrogen atoms might be at very high temperatures , one would have to gather them together over an enormous volume of space to collect enough heat to boil a thimbleful of water . A very similar state ...
... heat " ! For though the occasional hydrogen atoms might be at very high temperatures , one would have to gather them together over an enormous volume of space to collect enough heat to boil a thimbleful of water . A very similar state ...
Pagina 145
... heat needed to keep an encampment warm even on Pluto . Heat is the one commodity which atomic power can already supply in unlimited amounts . It could be when one attempted to explore these planets , either in space - suits or vehicles ...
... heat needed to keep an encampment warm even on Pluto . Heat is the one commodity which atomic power can already supply in unlimited amounts . It could be when one attempted to explore these planets , either in space - suits or vehicles ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
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acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless