ISSN: 0022-1198
CODEN: JFSCA
Published Online: 1 April 1980
Page Count: 4

Transmitted Infrared Luminescence in Document Examination
Gross, E
Head, Photography Laboratory,

Almog, J
Head, Photography Laboratory,

Sin-David, L
Head, Photography Laboratory,

(Received 24 April 1979; accepted 4 August 1979)

Abstract

A modified infrared luminescence technique that enables the restoration of texts obliterated by certain substances is described. The new method, transmitted infrared luminescence, is based on illumination of the examined document from the rear rather than from the front as in common infrared luminescence. The success of the new technique in actual cases is demonstrated.

Keywords:
questioned documents, spectroscopic analysis

Paper ID: JFS12141J
DOI: 10.1520/JFS12141J
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