Would the night sky still be dark with 2mm-sensitive eyes?

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SUMMARY

If human eyes were sensitive to electromagnetic radiation at a wavelength of 2 mm, the night sky would not appear dark. This is due to the peak of the cosmic microwave background radiation occurring at this wavelength, meaning that any direction looked at would reveal this background radiation. Additionally, the atmosphere is relatively transparent at 2 mm, allowing for the visibility of this radiation.

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  • Understanding of electromagnetic radiation and its spectrum
  • Knowledge of cosmic microwave background radiation
  • Familiarity with atmospheric transparency and its effects on light
  • Basic concepts of human vision and sensory perception
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  • Explore the electromagnetic spectrum and its various wavelengths
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UMich1344
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Would the night sky appear dark if our eyes were sensitive to electromagnetic radiation with wavelength around 2 mm? Why or why not?
 
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Thats the peak of the microwave background - so where ever you looked you would be seeing uwave background. Depends how sensitive your uwave eyes are!
Incidently the sky is fairly transparent at 2mm.
 
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