The Exploration of SpaceHarper, 1951 - 199 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 25
Pagina 2
... idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages was now becoming popular , and in 1640 Bishop Wilkins published a very important book A ...
... idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages was now becoming popular , and in 1640 Bishop Wilkins published a very important book A ...
Pagina 56
... idea : it is merely sound engineering . Shipbuilders do not try to give the same vessel the characteristics both of ocean greyhound and coastal tug . If we try to do this in spaceship con- struction , we shall be making our already ...
... idea : it is merely sound engineering . Shipbuilders do not try to give the same vessel the characteristics both of ocean greyhound and coastal tug . If we try to do this in spaceship con- struction , we shall be making our already ...
Pagina 177
... idea does not involve any mathematical or physical impossibilities , and the feat would not require too enormous amounts of fuel if the total conversion of mass into energy could be achieved . Although , at the moment , we have no idea ...
... idea does not involve any mathematical or physical impossibilities , and the feat would not require too enormous amounts of fuel if the total conversion of mass into energy could be achieved . Although , at the moment , we have no idea ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
Drept de autor | |
16 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere body bricks 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 giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million 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 tion trolley Uranus voyage weight