Wuhan Guide IR136 Manual de usuario descargar pdf (Pagina 68)

Thermografie in der Theorie und Praxis (INTERNET: www.irPOD.net / e-MAIL: [email protected] ) © Bernd Schindel 2007

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Contrast

The relationship between the brightest intensity on a display and the dimmest. In an infrared system this

may adjust the temperature range on the display. Increasing and decreasing the display range of

temperature will change the apparent brightness difference between two different temperature values.

Convection

The transfer of energy through a liquid or gas due to the motion of the medium.

Coolant

A medium, usually gas or liquid that is either held at low temperatures or generates low temperatures when

it expands used to reduce the temperature of another object.

Coulomb

A quantity measurement electricity. one coulomb is equal to 6.3 x 1018 electrons.

Critical Angle

The smallest incident radiation angle at which total internal reflection occurs. This angle is defined using

Snell's law, setting the sine of the refraction angle of the lower index material equal to one.

Crosshair

A graphically based cursor overlay for identifying locations on an image - represented as the intersection of

a vertical and horizontal line.

Current

The rate of flow of electricity.

Cryogen Cryogenics

Pertaining to extreme cold. A cryogen is a material that will create extremely cold conditions. Cryogenics is

the study of extreme cold. In infrared, cryogenics usually refers to the means used to reduce the detector

temperature to a useful value. Temperatures less than 200 degrees K could be considered cryogenic.

Cutoff Wavelength

The wavelength determined when the transmission of a filter drops below 5%.

Cut-On Wavelength

The wavelength of a filter where the transmission first exceeds 5%.

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Wuhan Guide IR136 Manual de usuario Pagina 68