When the temperature of a body goes below absolute zero, the body emits infra-red radiation. The intensity of this electromagnetic radiation depends for the greater part on the temperature of the body. Therefore, a system able to graphically record variations in energy can supply extremely accurate temperature measurements. Details are given of A method of obtaining infrared thermographs; it consists in transforming the variations in radiation energy emitted by bodies into variations in electrical voltage by means of A sensor. By applying this technique to the surface of A terrain from an aircraft it is possible to obtain very useful information on the characteristics of this terrain, particularly in the detection of ground water. /TRRL/

  • Availability:
  • Corporate Authors:

    Revista de Ingeniera Tecnica de obras Publicas

    Miguel Angel
    16 Madrid-10,   Spain 
  • Authors:
    • Paredes, A S
  • Publication Date: 1972-4


  • Spanish

Media Info

  • Features: Photos;
  • Pagination: p. 3-10
  • Serial:
    • Cimbra
    • Issue Number: 84
    • ISSN: 0210-0479

Subject/Index Terms

Filing Info

  • Accession Number: 00125293
  • Record Type: Publication
  • Source Agency: Transportation & Soil Mechanics Laboratory, Spain
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1975 12:00AM