The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 34
... build up escape velocity as quickly as possible- and then to cut the rockets and " coast " . A commonplace but accurate analogy is given by the cyclist who builds up enough speed on the level to take him over a hill . To surmount our ...
... build up escape velocity as quickly as possible- and then to cut the rockets and " coast " . A commonplace but accurate analogy is given by the cyclist who builds up enough speed on the level to take him over a hill . To surmount our ...
Pagina 153
... build instru- ments which could measure the diameters of normal - sized stars . It might even become possible to detect planets of the nearer stars , something quite out of the question with earth - based equipment . Since 1945 ...
... build instru- ments which could measure the diameters of normal - sized stars . It might even become possible to detect planets of the nearer stars , something quite out of the question with earth - based equipment . Since 1945 ...
Pagina 190
... build spaceships any more than aeronautical societies , as such , build aircraft . They will be the specialist organisations — the professional bodies of the scientists and engineers doing work in this field . When the time comes to build ...
... build spaceships any more than aeronautical societies , as such , build aircraft . They will be the specialist organisations — the professional bodies of the scientists and engineers doing work in this field . When the time comes to build ...
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