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Applied Optics

Applied Optics


  • Vol. 5, Iss. 6 — Jun. 1, 1966
  • pp: 929–932

Effective Emissivity of a Spherical Cavity

P. Campanaro and T. Ricolfi  »View Author Affiliations

Applied Optics, Vol. 5, Issue 6, pp. 929-932 (1966)

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At the Istituto Termometrico Italiano a spherical cavity has been constructed as a radiation source in absolute temperature measurements. In theoretical prediction of its effective emissivity, a discrepancy appears between Gouffé’s and DeVos’s formulas. In this paper the authors discuss the approximations involved in DeVos’s process and report corrections suitable to improve the precision of the results. With such corrections, computations based on both formulas agree within a wide variation range.

© 1966 Optical Society of America

Original Manuscript: November 15, 1965
Published: June 1, 1966

P. Campanaro and T. Ricolfi, "Effective Emissivity of a Spherical Cavity," Appl. Opt. 5, 929-932 (1966)

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