The Exploration of SpaceHarper, 1959 - 200 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 70
Pagina 22
... speed that the first one did . Consequently not only does the trolley's velocity increase during the experiment ... speed when all the bricks have been used up . It should be fairly obvious that this final speed depends on two factors ...
... speed that the first one did . Consequently not only does the trolley's velocity increase during the experiment ... speed when all the bricks have been used up . It should be fairly obvious that this final speed depends on two factors ...
Pagina 34
... speed to main- tain itself . It fell downwards , gaining speed as it did so , until it had picked up enough speed to climb upwards again and retrace its orbit . Its path is thus not a circle , but an eclipse , as is the case in practice ...
... speed to main- tain itself . It fell downwards , gaining speed as it did so , until it had picked up enough speed to climb upwards again and retrace its orbit . Its path is thus not a circle , but an eclipse , as is the case in practice ...
Pagina 171
... speed equal to 98 per cent of that of light , or just over 600,000,000 mph . At this speed , it would reach the nearest star in four and three - quarter years . However , we are dealing with such enormous velocities that the period of ...
... speed equal to 98 per cent of that of light , or just over 600,000,000 mph . At this speed , it would reach the nearest star in four and three - quarter years . However , we are dealing with such enormous velocities that the period of ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
Drept de autor | |
1 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless