Accession Number : ADD003958
Title : Apparatus for Measuring the Electromagnetic Impedance of Soils.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C
Personal Author(s) : Falls,Robert A
Report Date : 22 Mar 1977
Pagination or Media Count : 4
Abstract : Apparatus for measuring the electromagnetic (E/M) impedance of soil is disclosed. This impedance is obtained by measuring the voltage standing wave ratio and first minimum with the disclosed apparatus. The apparatus comprises a trombone slotted line in combination with an earth probe. The trombone slotted line comprises a telescoping outer conductor and a telescoping inner conductor coaxial with and surrounded by the outer conductor. The inner part of the telescoping outer conductor has a slot along its length and a probe that passes through the outer part of the telescoping outer conductor extends into this slot. The earth probe also comprises an outer conductor and a coaxial inner conductor surrounded by the outer conductor.
Descriptors : *Patents, *Soil mechanics, *Electrical impedance, Electrical measurement, Electromagnetic radiation
Subject Categories : Soil Mechanics
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE