The following data is provided for the spectral distribution of the radiation emitted by a diffuse surface.

The following data is provided for the spectral distribution of the radiation emitted by a diffuse surface.

  • Elambda (W/m2 micrometer) = 0 for lambda between 0 and 5
  • Elambda (W/m2 micrometer) = 100 for lambda between 5 and 10
  • Elambda (W/m2 micrometer) = 200 for lambda between 10 and 15
  • Elambda (W/m2 micrometer) = 100 for lambda between 15 and 20
  • Elambda (W/m2 micrometer) = 0 for lambda above 20

Provide the following:

  1. A plot of Elambda versus lambda, based on the given data
  2. Assumptions
  3. Total emissive power, E
  4. Total intensity of the radiation emitted, Ie
  5. Explain the reason why there are (or there are no) differences between the intensity emitted at 0 degrees versus at 30 degrees to the surface normal direction. Use a sketch and only one sentence.

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