12319 Glossary ...........................................................................................................................................
12720 Thermographic measurement techniques ...................................................................................
12720.1 Introduction ..........................................................................................................................
12720.2 Emissivity ..............................................................................................................................
12820.2.1 Finding the emissivity of a sample .......................................................................
12820.2.1.1 Step 1: Determining reflected apparent temperature .......................
13020.2.1.2 Step 2: Determining the emissivity ...................................................
13120.3 Reflected apparent temperature ..........................................................................................
13120.4 Distance ................................................................................................................................
13120.5 Relative humidity ..................................................................................................................
13120.6 Other parameters ..................................................................................................................
13221 History of infrared technology ......................................................................................................
13622 Theory of thermography ................................................................................................................
13622.1 Introduction ...........................................................................................................................
13622.2 The electromagnetic spectrum ............................................................................................
13722.3 Blackbody radiation ..............................................................................................................
13822.3.1 Planck’s law ..........................................................................................................
13922.3.2 Wien’s displacement law ......................................................................................
14122.3.3 Stefan-Boltzmann's law .........................................................................................
14222.3.4 Non-blackbody emitters .......................................................................................
14422.4 Infrared semi-transparent materials .....................................................................................
14623 The measurement formula .............................................................................................................
15224 Emissivity tables .............................................................................................................................
15224.1 References ............................................................................................................................
15224.2 Important note about the emissivity tables ..........................................................................
15324.3 Tables ....................................................................................................................................
x Publ. No. T559382 Rev. a358 – ENGLISH (EN) – June 23, 2009
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