The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina xiv
... Atomic propulsion also appears more promising than the first studies had indicated . It may be extremely difficult to build atomic rockets that can take off from the Earth ; but once in space , a purely electrical propulsion system ...
... Atomic propulsion also appears more promising than the first studies had indicated . It may be extremely difficult to build atomic rockets that can take off from the Earth ; but once in space , a purely electrical propulsion system ...
Pagina 64
... atomic pile , for nuclear reactions liberate something like a million times the energy of chemical reactions . It is now possible to build piles ( employing enriched uranium instead of the element in its normal form ) which are only a ...
... atomic pile , for nuclear reactions liberate something like a million times the energy of chemical reactions . It is now possible to build piles ( employing enriched uranium instead of the element in its normal form ) which are only a ...
Pagina 188
... atomic energy without atomic bombs . This particular problem is not , of course , peculiar to rocket research : it can be encountered today in every field of scientific activity — even in medicine , for the power to heal is also the ...
... atomic energy without atomic bombs . This particular problem is not , of course , peculiar to rocket research : it can be encountered today in every field of scientific activity — even in medicine , for the power to heal is also the ...
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