The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 63
... energy has been released only in the forms of radiation and heat . It can be produced at all power levels from that ... energy of heat into energy of motion . The conventional rocket , of course , does exactly this . During combustion ...
... energy has been released only in the forms of radiation and heat . It can be produced at all power levels from that ... energy of heat into energy of motion . The conventional rocket , of course , does exactly this . During combustion ...
Pagina 175
... energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy of matter ( not merely the o.1 per cent . we can liberate today ) and then ...
... energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy of matter ( not merely the o.1 per cent . we can liberate today ) and then ...
Pagina 179
... energy , might enable speeds near that of light to be reached after relatively brief periods of acceleration . It ... energy : the only problem was to obtain this energy , and like all purely technical problems this was eventually solved ...
... energy , might enable speeds near that of light to be reached after relatively brief periods of acceleration . It ... energy : the only problem was to obtain this energy , and like all purely technical problems this was eventually solved ...
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