The two correct statements about the different types of radiation measured in the Total Solar Irradiance are:
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Radiation in the short extreme ultraviolet (EUV) range is most likely to have the widest variation.
- This statement is accurate because radiation in the EUV range is subject to significant fluctuations due to solar activity such as solar flares and coronal mass ejections.
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Radiation with short wavelengths is emitted steadily and constantly from the sun.
- This statement is less accurate, as while shorter wavelengths typically include more constant emissions in terms of total energy output, they can still vary due to solar activity. However, for the sake of selecting the widely accepted general view, it can be considered correct within the context of steady emissions compared to highly variable EUV output.
If you were looking specifically for the most accurate two without ambiguity, the first statement regarding EUV variability is leading, and taken in conjunction with the broader context of steady emissions, usually radiation in the visible spectrum is also emitted steadily. So a more cautious approach might select:
- Radiation in the short extreme ultraviolet (EUV) range is most likely to have the widest variation.
- Radiation in the visible light wavelengths is emitted steadily and constantly from the sun.
This reflects a clearer understanding of the steady emissions versus varying emissions based on solar activity.
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