The Exploration of Space |
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Pagina 75
Using the rockets to produce a deceleration of one gravity , a speed of fall of 5,000 m.p.h. could be checked in four minutes , during which time the ship would cover a distance of a hundred and sixty miles .
Using the rockets to produce a deceleration of one gravity , a speed of fall of 5,000 m.p.h. could be checked in four minutes , during which time the ship would cover a distance of a hundred and sixty miles .
Pagina 88
It would take five and nine minutes respectively to get replies from Venus and Mars , even at their closest to the Earth ! This difficulty is a fundamental one , and is nothing to do with the inadequacies of our present - day equipment ...
It would take five and nine minutes respectively to get replies from Venus and Mars , even at their closest to the Earth ! This difficulty is a fundamental one , and is nothing to do with the inadequacies of our present - day equipment ...
Pagina 96
Now it is possible for a man in normal health to stand such accelerations for two or three minutes even in the sitting position . ... is very greatly increased and a man can survive even twenty gravities for periods of up to a minute .
Now it is possible for a man in normal health to stand such accelerations for two or three minutes even in the sitting position . ... is very greatly increased and a man can survive even twenty gravities for periods of up to a minute .
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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 moving 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 seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole
Informații bibliografice
| Titlu | The Exploration of Space |
| Autor | Arthur Charles Clarke |
| Editor | Temple Press, 1951 |
| Exemplar original de la | Universitatea din Michigan |
| Scanată la | 14 Dec 2007 |
| Lungime | 198 pagini |
| Exportă citatul | BiBTeX EndNote RefMan |