The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 97
... facts are obvious at once . In many respects our bodies show an almost complete indifference to the direction of ... fact that the heart then has only a fraction of its normal work to do in lifting the weight of blood does not cause ...
... facts are obvious at once . In many respects our bodies show an almost complete indifference to the direction of ... fact that the heart then has only a fraction of its normal work to do in lifting the weight of blood does not cause ...
Pagina 98
... fact that people who for some reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orientate them- selves correctly even under water , when there is no sensation of weight to give any ...
... fact that people who for some reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orientate them- selves correctly even under water , when there is no sensation of weight to give any ...
Pagina 125
... facts . Because of its distance , an observer of Mars , using a large telescope under conditions of good seeing , is in ... fact soon shows less : it is like looking at the reproduction of a photograph in a newspaper through a magnifying ...
... facts . Because of its distance , an observer of Mars , using a large telescope under conditions of good seeing , is in ... fact soon shows less : it is like looking at the reproduction of a photograph in a newspaper through a magnifying ...
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