19
The measurement formula
Figure 19.2 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
Figure 19.3 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
#T559828; r. AK/40423/40448; en-US
= 20°C (+68°F); T
= 20°C (+68°F).
refl
atm
= 20°C (+68°F); T
= 20°C (+68°F).
refl
atm
95