The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 22
... increased in this manner , but it is an inefficient way of doing so . It would be far more economical to increase the speed of ejection than to increase the load of bricks , and the latter should only be done if there is no alternative ...
... increased in this manner , but it is an inefficient way of doing so . It would be far more economical to increase the speed of ejection than to increase the load of bricks , and the latter should only be done if there is no alternative ...
Pagina 90
... increases , reaching a maximum about twelve miles up , where it may be fifty times as intense as at sea level . With further increase of altitude the value drops again , reaching a uniform level about fifteen times that at the Earth's ...
... increases , reaching a maximum about twelve miles up , where it may be fifty times as intense as at sea level . With further increase of altitude the value drops again , reaching a uniform level about fifteen times that at the Earth's ...
Pagina 96
... increased and a man can survive even twenty gravities for periods of up to a minute . The human body is built ... increase in structural weight to withstand them . Four gravities in the " lying prone " position would not even be ...
... increased and a man can survive even twenty gravities for periods of up to a minute . The human body is built ... increase in structural weight to withstand them . Four gravities in the " lying prone " position would not even be ...
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