signal from gold

[Fred]

Esteban, tell me if i am bothering you,

But what capacitance effect is that? How can you explain that by just turning the coil upside down 6 meters above ground i notice a difference ?
Also, if you get close to a wall (with soil behind) there is no effect from the wall.
You can be in a hole, even i a metallic container this effect this still there.

WHAT IS THIS ??
Regards,
Fred.