Wuhan Guide IR136 Manuel d'utilisateur télécharger pdf (Page 81)

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

Seite 81 von 88

Qualitative Analysis

An analysis of objects or processes which is concerned with deriving structural, material, or relative

information. This type of analysis can be done with imagers, line scanners, and viewers; temperature or

radiometric data output is not required.

Quantitative Analysis

An analysis of objects or processes which is concerned with measuring temperatures or radiant energy

levels by assigning numerical values to the characteristics of the displayed scene.

Quantum Efficiency

The ratio of actual detectivity to theoretical detectivity for a given detector material.

Radian

A measurement of angle. There are 2 r radians in a full circle of 360 angular degrees.

Radiance

The total intensity of thermal energy (radiant flux) which can be observed from a surface. It is scaled by unit

of solid angle of view and by unit of area from the surface. The flux includes all forms of radiation emission,

reflection and transmission.

Radiation

Heat transfer of energy in the form of electromagnetic waves. Forms of radiation include cosmic rays,

gamma rays, x-rays, ultraviolet radiation, infrared, visible light, radio, audio, and sub sonic.

Radiometer

An instrument which measures radiation levels. Such an instrument can be calibrated in power or

temperature.

Rankin

A temperature scale based on O degrees R equal to absolute zero temperature. The increment of one

degree Rankin is equal to one degree Fahrenheit. 459.70 Rankin is equal to O degrees F.

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 87 88

Pas de commentaire

Wuhan Guide IR136 Manuel d'utilisateur Page 81