Word: radioing
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...perform. A powerful nuclear charge need only be blasted free of the earth and set in orbit around the sun. Since its speed will not be the same as the earth's, it will move steadily away. When it gets far enough, it can be exploded by a radio signal or a timing mechanism...
...revolution, one turn. This was done by an infrared scanner, which watched the line of the horizon ahead and released little spurts of gas to keep the satellite's attitude stable. This complicated operation seems to have worked well. As Discoverer II circled the earth, its directional radio signals kept at a steady level. If Discoverer had not been stabilized properly, they would have fluctuated as the satellite wobbled...
Paddle Wheels for Power. Oddest-looking satellite yet is one scheduled for launching next month by the National Aeronautics and Space Administration to test the possibility of sending a probe to the neighborhood of Venus. There is no point in such a probe unless radio communication can be maintained across 25 million miles, the nearest approach of Venus. Transmission over this distance requires a lot of power. Chemical batteries are too feeble. Nuclear-powered batteries are promising but have not been developed sufficiently. The best bet is solar cells, which capture energy from sunlight...
...spaceborne. The array of solar batteries is expected to develop as much as 400 watts, about enough to run a small toaster. Most of the energy will be stored in nickel-cadmium batteries. When triggered by a signal from the earth, the batteries will power the satellite's radio transmitter...
...long elliptical orbit that will take it about 30,000 miles from the earth. It will carry various instruments, but its principal job will be to answer promptly when spoken to. If all goes well, it will draw on its stored solar power and speak in a loud radio voice. Then its designers can judge whether a transmitter of this type can be made loud enough to be heard from Venus...