All about Vertical Antennas - download pdf or read online

By William I. Orr, Stuart D. Cowan

ISBN-10: 0823087107

ISBN-13: 9780823087105

This authoritative guide covers the layout, development, deploy, and operation of fifty two vertical antennas.

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So when we multiply joules/coulomb X coulomb/second, the coulombs cancel out and we are left with joules/second… which is the definition of power. Now let’s increase the amount of resistance to 2 ohms. Current through the resistor: ½ amp (1/2 coulomb per second). So Power is reduced to ½ watt. Doubling the voltage has led to a fourfold increase in the rate at which energy is used. Now let’s combine the power equation with Ohm’s Law. The rate at which the work is done (P) has increased. In other words, if you maintain a constant voltage, but increase the resistance in the circuit, the rate at which energy is expended (the power) will decrease—you are giving each coulomb the same amount of energy, but because of the higher resistance you are moving at a slower rate.

I, of course, didn’t pay enough attention to this requirement—my ground wire was woefully un-Germanic. Poor Hilmar—he really found this kind of thing painful to look at. I had to, for example, get some resistance to put in line with some voltmeters so it would run in different scales. Things like that. ” From The Pleasure of Finding Things Out – The Best Short Works of Richard P. Feynman pp 227-228 Perseus Publishing 1999 As a kid, I guess I had the same kind of “laboratory” that Feynman had, but unfortunately I didn’t make the connection between the math I was learning in school and my home experiments with batteries, light bulbs, wires and (later) radios.

You can see where we’re going with this: As far as you can go, and at the speed of light. In Maxwell’s day it was thought that just as air carries sound waves, there had to be some sort of medium carrying the electromagnetic waves. They reasoned that the earth’s motion through space should affect the speed of light arriving to us from different directions: If the earth is moving rapidly in its orbit toward an object, light moving through a fixed ether should be coming at us faster than light coming from objects in the opposite direction.

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All about Vertical Antennas by William I. Orr, Stuart D. Cowan

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