The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 61
... atomic energy has been released only in the forms of radiation and 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 ...
... atomic energy has been released only in the forms of radiation and 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 ...
Pagina 62
... atomic pile , for nuclear reactions liberate something like a million times the energy of chemical reactions . It is now possible to build piles ( em- ploying enriched uranium instead of the element in its normal form ) which are no ...
... atomic pile , for nuclear reactions liberate something like a million times the energy of chemical reactions . It is now possible to build piles ( em- ploying enriched uranium instead of the element in its normal form ) which are no ...
Pagina 63
... atomic propulsion may come into its own . There is now a strong feeling that atomic energy will be har- nessed to spaceship propulsion by means of what has been christened the " ion drive . " This is a purely electrical propulsion ...
... atomic propulsion may come into its own . There is now a strong feeling that atomic energy will be har- nessed to spaceship propulsion by means of what has been christened the " ion drive . " This is a purely electrical propulsion ...
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