The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 66
... oxygen — the remaining four - fifths of nitrogen is simply " ballast " and plays no part in respiration . Thus the oxygen in the atmosphere contributes only three pounds to the total fifteen pounds of pressure — and if we used in the ...
... oxygen — the remaining four - fifths of nitrogen is simply " ballast " and plays no part in respiration . Thus the oxygen in the atmosphere contributes only three pounds to the total fifteen pounds of pressure — and if we used in the ...
Pagina 67
... oxygen . In addition , supplies of pure oxygen can be carried in the liquid state in suitable storage flasks . The amount of oxygen needed by a man under normal con- ditions is surprisingly small — just over three pounds a day if he is ...
... oxygen . In addition , supplies of pure oxygen can be carried in the liquid state in suitable storage flasks . The amount of oxygen needed by a man under normal con- ditions is surprisingly small — just over three pounds a day if he is ...
Pagina 128
... oxygen , and we have tests which could detect the presence of this gas even if it were only a thousandth as common ... oxygen we could not survive in it . The fact that it contains virtually no oxygen at all rules out any forms of animal ...
... oxygen , and we have tests which could detect the presence of this gas even if it were only a thousandth as common ... oxygen we could not survive in it . The fact that it contains virtually no oxygen at all rules out any forms of animal ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust tion trolley Uranus voyage weight