The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 75
... minutes , during which time the ship would cover a distance of a hundred and sixty miles . It would certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking ...
... minutes , during which time the ship would cover a distance of a hundred and sixty miles . It would certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking ...
Pagina 88
... minutes before . It is worth mentioning that , for some purposes , the use of light waves might be more convenient than radio . A beam of light can easily be modulated by speech , and , in the heliograph , it was used for sending Morse ...
... minutes before . It is worth mentioning that , for some purposes , the use of light waves might be more convenient than radio . A beam of light can easily be modulated by speech , and , in the heliograph , it was used for sending Morse ...
Pagina 96
... minutes even in the sitting position . Lying down , the tolerance to acceleration is very greatly increased and a man can survive even twenty gravities for periods of up to a minute . The human body is built , therefore , to far more ...
... minutes even in the sitting position . Lying down , the tolerance to acceleration is very greatly increased and a man can survive even twenty gravities for periods of up to a minute . The human body is built , therefore , to far more ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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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