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Originally Posted by FrancoItaly
We know that a static E field exists above the ground, about 100V/m, I think that this field is not perfectly vertical but it's curved in south/north direction and this fact cause a not uniform field as an example at 1 meter above the ground. If we move our PD horizontally to 360 degrees we obtain some signals because the TR coil meets points of various intensity and this is the "compass" effect. The "sky" effect is similar at it's caused also by the vertical movement of the coil. Every unshielded TR coil is sensitive to static E field and this is the key of lrl phenomenon. A long buried metal generates a ground battery, a voltage difference between the target and all the ground in the vicinities and this acts also above the ground for some meters. A high degree of humidity lowers the "air impedance" and it reduces the signal from target. The signals of "compass" effect and long buried metals are very similar and a good system to null or reduces this effect it's a "differencial" approach and this is used in Alonzo PD: the ferrite coil supplies a 180 degrees signal mixed with omega coil and this reduces more the compass effect and less the long buried metals. If we increase the gain of PD the effect reappears.
Best Regards
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Hi Franco,
You have an interesting theory.
From what I read you made this theory after a lot of observations with your LRL experiments.
I think that the observations you make are accurate, because I know you make good notes for what you see.
But then I look at the theory you make to explain the things you observed.
I have some questions about these theories, because some things you say in these theories seem very strange.
Maybe you observed something to give you better information than what I know, so I have these questions:
1.
"I think that this field is not perfectly vertical but it's curved in south/north direction and this fact cause a not uniform field as an example at 1 meter above the ground."
My question is how did you come to know this electrostatic field is not perfectly vertical, and is curved? How can I learn more about this curvature of the electrostatic field you think exists?
2.
"A long buried metal generates a ground battery, a voltage difference between the target and all the ground in the vicinities and this acts also above the ground for some meters."
I am aware of how buried metals can act as a ground battery. In the best of conditions, if we have a very good electrolyte and moisture in the ground, then we could develop more than 1 volt, but less than 2 volts EMF from a ground battery. This 2 volts could exist only if conditions were right where the cations and anions are separated by a suitable ground matrix that allowed the voltage to develop like it can in a man-made cell. Usually the voltage caused by corroding metal in the ground is a fraction of a volt which we can measure by placing probes into the ground. Since the static charge in the air is around 100 volts/meter, how can a fraction of a volt in the ground show any amount of voltage anomaly in the 100 v/meter gradient air?
3. Your concept of the sky effect depends on the RX coil being moved to a location that has a different electrostatic field strength, not on the angle the coil is pointed.
I was thinking that if the PD coil is held in the same location, but turned to point to the sky, or toward the ground, we would see the sky and ground effect.
It was my understanding the PD is a VLF loop transmitter and receiver, which has a pair of directional lobes in the transmission polar (and reception polar)
that fully explain the sky and ground effect to be caused by VLF absorption and reflection, rather than electrostatic effects.
My question is where did you get the idea that electrostatics is causing these effects?
I would think you got these ideas by making assumptions, but I may be wrong. Maybe you observed some things during your experiments that others did not?
Best wishes,
J_P