How to calculate color temperature?

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SUMMARY

This discussion focuses on calculating color temperature in the infrared and microwave frequency ranges, specifically for temperatures of 273K, 263K, and 253K. The key method mentioned is Wien's Law, which relates the peak frequency of radiation to temperature, applicable even for black body radiation in lower frequency spectrums. The cosmic background temperature of 2.7K is cited as a relevant example. Additionally, the importance of plotting the spectrum of the source to identify peak frequencies and eliminate microwave interference is emphasized.

PREREQUISITES
  • Understanding of Wien's Law
  • Knowledge of black body radiation principles
  • Familiarity with infrared and microwave frequency ranges
  • Ability to plot and analyze spectral data
NEXT STEPS
  • Research the application of Wien's Law in non-visible light spectrums
  • Learn about black body radiation and its implications in thermal physics
  • Explore methods for plotting and analyzing microwave spectra
  • Investigate sources of microwave interference and techniques to mitigate them
USEFUL FOR

Physicists, engineers, and researchers working in thermal imaging, spectroscopy, or any field requiring the calculation of color temperature in non-visible light spectrums.

jms4
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I am looking for calculating color temperature in the IR/Microwave scale frequencies, for room temperature, 273K, 263K, 253K, all google is showing is about visible light and about display systems.
 
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I wonder how you want to calculate a temperature if you already have a temperature. For the first part of your question: Check out how they calculate the cosmic background (2.7 K) temperature from the microwave spectrum.
 
I think Wien's Law is what you want here. Wiki has a page on it. If you are sure that the radiating object can be treated as a black body then all the formulae for visible light should work for lower frequency parts of the spectrum. The peak frequency of the radiation should yield the temperature. Have you the facility to plot the spectrum of your source around the peak? You may need to eliminate sources of microwave interference and a spectrum could reveal their presence.
 

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