The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 63
... heat . It can be produced at all power levels from that needed to boil a cup of water in five minutes to that required 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 required to smash a city in a few seconds . There is no way , however , in which it can be used directly to provide a ...
Pagina 68
... heat waves . In the extreme case of a completely black body , the temperature at the parts directly facing the Sun ... heat and so be quite cool . The dark ( or night ) side of the body would be cold in any case , since it is continually ...
... heat waves . In the extreme case of a completely black body , the temperature at the parts directly facing the Sun ... heat and so be quite cool . The dark ( or night ) side of the body would be cold in any case , since it is continually ...
Pagina 69
... heat would be generated inside the spaceship by the bodies of the passengers . A double - hulled ship in space would behave like a very efficient thermos flask , and it would often be more important to lose heat than to conserve it . On ...
... heat would be generated inside the spaceship by the bodies of the passengers . A double - hulled ship in space would behave like a very efficient thermos flask , and it would often be more important to lose heat than to conserve it . On ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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Termeni și expresii frecvente
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