Spectral peaks and wien's displacement law

Seán M. Stewart

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The spectral distribution of blackbody radiation is studied with the help of Wien's displacement law. For a blackbody radiating into a hemispherical envelope in space, in the linear wavelength spectral representation, Planck's radiation law is defined. In writing the expression for the Wien peaks in closed form, the recently defined Lambert W function is introduced. As a spectral quantity, the character of Wien peak is differential in nature and depends on the independent variable chosen for the bandwidth. The nonconstancy in interval widths between the two scales results in the differences found in their spectral curve shapes and corresponding peak locations. The ephemeral nature of the Wien peak makes it clear that the logarithmic scale is no more significant nor privileged than any other spectral scale.

Original languageEnglish
Pages (from-to)689-691
Number of pages3
JournalJournal of Thermophysics and Heat Transfer
Volume26
Issue number4
DOIs
Publication statusPublished - Oct 1 2012

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Space and Planetary Science

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