The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 23
... possible for the trolley to carry so much propellant that it could finally travel twice as fast as the speed with which the bricks are thrown off ? This idea may at first seem a little startling , but it must be remembered that as long ...
... possible for the trolley to carry so much propellant that it could finally travel twice as fast as the speed with which the bricks are thrown off ? This idea may at first seem a little startling , but it must be remembered that as long ...
Pagina 105
... possible to measure the feeble radio waves emitted by the Moon - for all heated bodies do emit radio waves , though at a power level far too low to be detected in ordinary circumstances . From such observations it has been possible to ...
... possible to measure the feeble radio waves emitted by the Moon - for all heated bodies do emit radio waves , though at a power level far too low to be detected in ordinary circumstances . From such observations it has been possible to ...
Pagina 116
... possible to generate electrical power on a large scale from nuclear sources . The power unit of an atomic rocket would provide ample energy to run turbines and generators . There is a good deal to be said for moving the lunar base ...
... possible to generate electrical power on a large scale from nuclear sources . The power unit of an atomic rocket would provide ample energy to run turbines and generators . There is a good deal to be said for moving the lunar base ...
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 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