The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 21
... produce a much greater effect than the first ones . If the " empty " weight of the trolley is half that of its " full " weight , the last brick of all will produce twice the gain in speed that the first one did . Consequently not only ...
... produce a much greater effect than the first ones . If the " empty " weight of the trolley is half that of its " full " weight , the last brick of all will produce twice the gain in speed that the first one did . Consequently not only ...
Pagina 75
... produce changes of spin and orientation , though very small ones . If it proved necessary , these could be taken care of by automatic , gyro - controlled equipment . To return to our ship falling towards the Moon . We will assume that ...
... produce changes of spin and orientation , though very small ones . If it proved necessary , these could be taken care of by automatic , gyro - controlled equipment . To return to our ship falling towards the Moon . We will assume that ...
Pagina 179
... produce one of the " space drives " so beloved of science - fiction writers . These drives , for the benefit of anyone unacquainted with contemporary mythology , have the great advantage that , since the force they produce acts ...
... produce one of the " space drives " so beloved of science - fiction writers . These drives , for the benefit of anyone unacquainted with contemporary mythology , have the great advantage that , since the force they produce acts ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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Termeni și expresii frecvente
able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole