ExplanationTerm or expression
Gases and materials can be more or less transparent. Transmis-
sion is the amount of IR radiation passing through them. A
number between 0 and 1.
transmission (or transmittance) factor
An isotherm showing a linear spread of colors, instead of cover-
ing the highlighted parts of the image.
transparent isotherm
Refers to the video mode of a IR camera, as opposed to the
normal, thermographic mode. When a camera is in video mode
it captures ordinary video images, while thermographic images
are captured when the camera is in IR mode.
visual
Publ. No. T559597 Rev. a554 – ENGLISH (EN) – September 27, 2011 159
30 – Glossary
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