Inductive Induced Polarization

[Anonymous]

I came across this patent last week and I think this to be far advanced of Corbyn's PI unit. As some of you know I've been very interested in Induced Polarization and was planning to build a unit that used earth rods to charge the earth, but used a coil to receive the discharge pulse. This method claims to do the same thing using inductive coupling to the earth. Eric and all, check out patent# 4,114,086. The thing I liked about Induced Polarization is the way gold stands out against any other metals (especially iron with it's large grains and 10X longer time constant). I have finished a design for such a unit and will be putting it together an IP unit to test out in the Mojave gold fields in the coming weeks. Would like to know others thoughts on this. I firmly believe with a standard size coil used on VLF metal detectors I should be able to detect small nuggets as they do. The unknown is the time constant which will have to be determined by experimentation.
Randy Seden-Simi Valley,CA.

 

[Anonymous]

Hi Randy,
Have you looked up VETEM yet on a search engine. VETEM stand for Very Early Time ElectroMagnetics. This is a PI technique being developed to measure ground resistivity and, one would also imagine, it would respond to IP.
Eric.