Action of the Earth in solenoids

[Esteban]

In a French book of Physics (translate to Spanish) by J. Langlebert, doctor in Medicine and professor of Nature Sciences and Physics, of 1911, you can found the action of the Earth in solenoids, page 394. This is, when you connect to the batteries a solenoid wich pivots in a receptacle with mercury (for to stablish well contact), the extremes "watch" one to North and other to South.

The pole wich "watch" to the North is called austral and the pole wich "watch" to the South is called boreal.

Ok, this acts as a compass.

Well, in the same way you can design a system wich can "watch" to desirable target...

I inform about this experiment to Alonso and he rapidly understand the theme. He design a LRL wich consist in a movable electrical pendulum with 5,000 ohms in coil and some other things inside. Once, was found a gold ring at 105 m distance and buried 50 cm depth, approximative. This is an example.

When you are near the target you put on a microvoltmeter based on the internal solenoid of the pendulum and you move the pendulum in the place. The exact point is confirmed when the pendulum move (with his coil, the sensor) a motor and the antenna...

The system also uses a 1,000 V, HV (inside pendulum).

So, is not impossible to build a "divining modern rod".