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