A large body of nonluminous gas at a temperature of 1100?C has emission bands between 2.5 and 3.5 mm and between 5 and 8 mm. At 1100?C, the effective emittance in the first band is 0.8 and in the second 0.6. Determine the emissive power of this gas in W/m2.GIVENA large body of nonluminous gasGas temperature (T) = 1100?C = 1373 KEmission bands: 2.5 μm Effective emittances: ε1 = 0.8; ε2 =0.6

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0,8 0.6- 0.4- 0.- 2.5 3.5 A (um)