The Exploration of SpaceTemple Press, 1951 - 198 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 23
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 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
Drept de autor | |
22 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust trolley Uranus voyage weight