Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 6, 2025
First, because we are already at the extreme limit of our power range and Jupiter is getting further and further away from Saturn. Second because our mirrors, which we had thought perfect reflectors of all frequencies possible of generation, are not perfect. Enough of those forces came through the mirrors to volatilize half our crew, and in a few minutes more none of us would have been left alive.
Alternate currents, especially of high frequencies, pass with astonishing freedom through even slightly rarefied gases. The upper strata of the air are rarefied. To reach a number of miles out into space requires the overcoming of difficulties of a merely mechanical nature.
The cost is a great drawback, but if we employ an oil as an insulator the distribution of electrical energy with something like 100,000 volts, and even more, become, at least with higher frequencies, so easy that they could be hardly called engineering feats.
Of course, strong solar activity can virtually make over-the-horizon HF radar unusable. A Spectrum Analyser display shows all the frequencies between 5 and 28 MHz.
The ionisation moves very rapidly sometimes you may be talking to a station in Malta and he suddenly disappears and a station in Yugoslavia comes up on the same frequency." "Every summer" George continued, "we get Troposcatter which allows communication on all frequencies from VHF to 10 GHz even.
There is no doubt that with the enormous potentials obtainable by the use of high frequencies and oil insulation luminous discharges might be passed through many miles of rarefied air, and that, by thus directing the energy of many hundreds or thousands of horse-power, motors or lamps might be operated at considerable distances from stationary sources.
To reduce the dissipation it is necessary to work with a small electric density the smaller the higher the frequency. But since, on the assumption before made, the loss is diminished with the square of the density, and since currents of very high frequencies involve considerable waste when transmitted through conductors, it follows that, on the whole, it is better to employ one wire than two.
By this time, fwoonk and pwink and tweelt and kroosh had become swear words among the joint Space Navy-Colonial Office contact team. "Well, if I hear the two sounds alike, why doesn't the analyzer hear them alike?" Karl Dorver demanded. "It has better ears than you do, Karl. Look how many different frequencies there are in that word, all crowding up behind each other," Lillian said.
We must give Vic a hand mustn't we? Naturally, I didn't understand Vic's jargon about frequencies and light-rays, for I thought more about football than physics in college, but two things were clear to me. One was that Vic had plunged into some sort of wild experiment, and the other was that Hope had followed him. The rest didn't matter very much. "Perrin! Mr. Butler and Miss Hope are safe.
Rovol first donned a suit of transparent, flexible material, of a deep golden color, instructing Seaton to do the same; explaining that much of the work would be with dangerous frequencies and with high pressures, and that the suits were not only absolute insulators against electricity, heat, and sound, but were also ray-filters proof against any harmful radiations.
Word Of The Day
Others Looking