Why is it called the ultraviolet catastrophe?

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SUMMARY

The term "ultraviolet catastrophe" specifically refers to the failure of classical physics, particularly the Rayleigh-Jeans Law, to predict the spectral energy distribution of blackbody radiation at ultraviolet wavelengths. According to Planck's Law, the measured curve peaks in the ultraviolet range, leading to the term's nomenclature. This phenomenon highlights the limitations of classical theories in explaining radiation beyond the visible spectrum, which was not fully understood until later developments in quantum mechanics.

PREREQUISITES
  • Understanding of Planck's Law and its implications in physics
  • Familiarity with Rayleigh-Jeans Law and its historical context
  • Basic knowledge of blackbody radiation concepts
  • Awareness of the electromagnetic spectrum, particularly the ultraviolet region
NEXT STEPS
  • Research the implications of Planck's Law in modern physics
  • Study the historical development of quantum mechanics and its relation to the ultraviolet catastrophe
  • Explore the electromagnetic spectrum and its various regions, focusing on ultraviolet radiation
  • Investigate the experimental measurements conducted by Pringsheim and their significance
USEFUL FOR

Physics students, educators, and researchers interested in the historical context of quantum mechanics and the evolution of theories regarding blackbody radiation.

genefalk
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Why is it called the ultraviolet catastrophe rather than the visible catastrophe or the microwave catastrophe?
 
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genefalk said:
Why is it called the ultraviolet catastrophe rather than the visible catastrophe or the microwave catastrophe?
A simple internet search tells me that the measured curve as predicted by Plank's Law peaks in the ultraviolet rather than going on to infinity as predicted by the classical Rayleigh-Jeans Law and I'd guess that's why it's called the "Ultraviolet Catastrophy". You would likely find it helpful to learn how to do simple research.
 
Thank you for your kind words.
 
This is easy. Ehrenfest had only one option, really. X rays and Gamma rays were unknown terminology to him and he really cared about the limits of the visible spectrum. Pringsheim did measurements there.
 

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