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20
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The measurement formula
Figure 20.2 Relative magnitudes of radiation sources under varying measurement conditions (SW camera).
1: Object temperature; 2: Emittance; Obj: Object radiation; Refl: Reflected radiation; Atm: atmosphere radia-
tion. Fixed parameters: τ = 0.88; T
refl
Figure 20.3 Relative magnitudes of radiation sources under varying measurement conditions (LW camera).
1: Object temperature; 2: Emittance; Obj: Object radiation; Refl: Reflected radiation; Atm: atmosphere radia-
tion. Fixed parameters: τ = 0.88; T
refl
FLIR-DIRECT
#T810252; r. AA/41997/41997; en-US
= 20°C (+68°F); T
= 20°C (+68°F).
atm
= 20°C (+68°F); T
= 20°C (+68°F).
atm
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