Electromagnetic Oscillations From a Bent Antenna ..
Electromagnetic Oscillations From a Bent Antenna ..
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In our eReader you can find the full English version of the book. Read Electromagnetic Oscillations From a Bent Antenna .. Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Electromagnetic Oscillations From a Bent Antenna ..
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Table 1 is developed from (9), K being given an arbitrary value. Diagram ^ is a graph of Table I, showing the approximate energy distribution. The distribution of energy is such that nearly all the radiation lies within the 30® angle with the horizon. These equations (8) and (9) throw some light on the action of tall antennas. The radius of action is increased as the antenna height is increased for two reasons.
First, because the lengthening of the antenna automatically in- creased the wave len...gth and the earth is a better conductor for long waves than for short ones. Secondly, because the waves from a high antenna are not brought to earth so quickly (see as- sumption three) as those from a short one. Just as soon, how- ever, as the wave length is reached for which the earth is a perfect conductor, no further improvement in conduction is effected by increasing the wave. Similarly there is a limit to Digitized by Google 8 ELECTROMAGNETIC OSCILLATIONS the second action, so that there is no reason for increasing the height of the sending antenna indefinitely.
What to read after Electromagnetic Oscillations From a Bent Antenna ..?
You can find similar books in the "Read Also" column, or choose other free books by Robert Cameron Colwell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Table 1 is developed from (9), K being given an arbitrary value. Diagram ^ is a graph of Table I, showing the approximate energy distribution. The distribution of energy is such that nearly all the radiation lies within the 30® angle with the horizon. These equations (8) and (9) throw some light on the action of tall antennas. The radius of action is increased as the antenna height is increased for two reasons.
First, because the lengthening of the antenna automatically in- creased the wave len...gth and the earth is a better conductor for long waves than for short ones. Secondly, because the waves from a high antenna are not brought to earth so quickly (see as- sumption three) as those from a short one. Just as soon, how- ever, as the wave length is reached for which the earth is a perfect conductor, no further improvement in conduction is effected by increasing the wave. Similarly there is a limit to Digitized by Google 8 ELECTROMAGNETIC OSCILLATIONS the second action, so that there is no reason for increasing the height of the sending antenna indefinitely.
What to read after Electromagnetic Oscillations From a Bent Antenna ..?
You can find similar books in the "Read Also" column, or choose other free books by Robert Cameron Colwell to read onlineMoreLess
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