17518.1 Introduction ..........................................................................................................................
17518.2 Emissivity ..............................................................................................................................
17618.2.1 Finding the emissivity of a sample .......................................................................
17618.2.1.1 Step 1: Determining reflected apparent temperature .......................
17818.2.1.2 Step 2: Determining the emissivity ...................................................
17918.3 Reflected apparent temperature ..........................................................................................
17918.4 Distance ................................................................................................................................
17918.5 Relative humidity ..................................................................................................................
17918.6 Other parameters ..................................................................................................................
18119 History of infrared technology ......................................................................................................
18520 Theory of thermography ................................................................................................................
18520.1 Introduction ...........................................................................................................................
18520.2 The electromagnetic spectrum ............................................................................................
18620.3 Blackbody radiation ..............................................................................................................
18720.3.1 Planck’s law ..........................................................................................................
18820.3.2 Wien’s displacement law ......................................................................................
19020.3.3 Stefan-Boltzmann's law .........................................................................................
19020.3.4 Non-blackbody emitters .......................................................................................
19320.4 Infrared semi-transparent materials .....................................................................................
19521 The measurement formula .............................................................................................................
20122 Emissivity tables .............................................................................................................................
20122.1 References ............................................................................................................................
20122.2 Important note about the emissivity tables ..........................................................................
20122.3 Tables ....................................................................................................................................
217Index ................................................................................................................................................
Publ. No. 1557954 Rev. a155 – ENGLISH (EN) – February 7, 2006 xv
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