Measuring Temperature using wavelenghts

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    Measuring Temperature
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SUMMARY

The discussion focuses on measuring the temperature of outer space by analyzing the wavelengths of electromagnetic radiation, specifically the cosmic microwave background radiation. The key principle involved is Wien's Displacement Law, which states that temperature is inversely proportional to wavelength. The peak wavelength of the cosmic microwave background is approximately 1 mm, corresponding to a temperature of 2.7 K. Additional related equations can be found at the provided link.

PREREQUISITES
  • Understanding of Wien's Displacement Law
  • Knowledge of electromagnetic radiation
  • Familiarity with blackbody radiation concepts
  • Basic mathematical skills for applying formulas
NEXT STEPS
  • Research the derivation and applications of Wien's Displacement Law
  • Explore the properties of cosmic microwave background radiation
  • Study blackbody radiation and its significance in astrophysics
  • Learn about other methods for measuring temperature in space
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Astronomers, physicists, and students interested in astrophysics and the study of cosmic phenomena will benefit from this discussion.

Aki
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I want to know the formula to find the temperature of outer space by measuring the wavelenghts of the electromagnetic radiation coming from that area. Does anyone know what I'm talking about?
 
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If you're talking about the cosmic microwave background radiation, the relationship you're looking for comes from the peak wavelength of the blackbody radiation spectrum. (I think this is sometimes referred to as Wien's law, but not sure.) Basically, the temperature is inversely proportional to the wavelength. The microwave background has a peak wavelength of about 1 mm, which corresponds to a temperature of 2.7 K.
 

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