18 Glossary
ExplanationTerm or expression
The amount of radiation absorbed by an object relative to the
received radiation. A number between 0 and 1.
absorption (absorption factor)
The gases between the object being measured and the camera,
normally air.
atmosphere
A function making a camera perform an internal image correc-
tion.
autoadjust
The IR image is shown with an uneven spread of colors, display-
ing cold objects as well as hot ones at the same time.
autopalette
Totally non-reflective object. All its radiation is due to its own
temperature.
blackbody
An IR radiating equipment with blackbody properties used to
calibrate IR cameras.
blackbody radiator
A transmission value computed from the temperature, the relative
humidity of air and the distance to the object.
calculated atmospheric transmission
A bottle shaped radiator with an absorbing inside, viewed
through the bottleneck.
cavity radiator
The temperature for which the color of a blackbody matches a
specific color.
color temperature
The process that makes heat diffuse into a material.conduction
A function that adjusts the image. The function works all the
time, continuously adjusting brightness and contrast according
to the image content.
continuous adjust
Convection is a heat transfer mode where a fluid is brought into
motion, either by gravity or another force, thereby transferring
heat from one place to another.
convection
An isotherm with two color bands, instead of one.dual isotherm
The amount of radiation coming from an object, compared to
that of a blackbody. A number between 0 and 1.
emissivity (emissivity factor)
Amount of energy emitted from an object per unit of time and
area (W/m
2
)
emittance
Objects and gases that emit radiation towards the object being
measured.
environment
A transmission value, supplied by a user, replacing a calculated
one
estimated atmospheric transmission
Publ. No. T559498 Rev. a461 – ENGLISH (EN) – August 19, 2010 55
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