The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 64
... pressure of about fifteen pounds per square inch , or almost a ton for every square foot of our bodies . We are not normally aware of this pressure , because it is equalized inside and out . Given time to ad- just itself , the body can ...
... pressure of about fifteen pounds per square inch , or almost a ton for every square foot of our bodies . We are not normally aware of this pressure , because it is equalized inside and out . Given time to ad- just itself , the body can ...
Pagina 65
... pressure outside it , being in a perfect vacuum , and so it must be strong enough to withstand the full internal pressure . To build a large container which will not burst when there is a force of one ton acting out- wards on every ...
... pressure outside it , being in a perfect vacuum , and so it must be strong enough to withstand the full internal pressure . To build a large container which will not burst when there is a force of one ton acting out- wards on every ...
Pagina 99
... pressure in a matter of seconds . This would be the case if a hole of area about a foot square was suddenly produced : an ordinary leak might take several minutes , or hours , to reduce the air pressure seriously . It has often been ...
... pressure in a matter of seconds . This would be the case if a hole of area about a foot square was suddenly produced : an ordinary leak might take several minutes , or hours , to reduce the air pressure seriously . It has often been ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
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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