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Question

State whether it is true that “the A spectrum is AM0 and the B spectrum is AM1.5”. Explain why B is weaker than A across the whole wavelength range. Show how you estimate the surface temperature of the Sun using the given spectrum.

- A 2.2 2 1.8 Black body spectrum (T = 5778 K) 1.6 1.4 B 1.2 1 Water vapour absorption 0.8 0.6 CO,, H,O 0.4 0.2 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 + uv + Visible + IR + Wavelength in nm Source: K. Mertens: textbook-pv.org Spectral irradiance in W/(m² . nm)
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Transcribed Image Text:- A 2.2 2 1.8 Black body spectrum (T = 5778 K) 1.6 1.4 B 1.2 1 Water vapour absorption 0.8 0.6 CO,, H,O 0.4 0.2 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 + uv + Visible + IR + Wavelength in nm Source: K. Mertens: textbook-pv.org Spectral irradiance in W/(m² . nm)
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