emissivity

What The Heck is Emissivity? (Part 2)

October 22, 2010

Fill up two soda cans with hot water and wrap Flagyl ER one in scotch tape. Which one will cool down faster? Obvious, right? Check it out, you might be surprised! From the ITC Channel at YouTube.com

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IR spectral characterization of customer blackbody sources:

December 5, 2008

“First calibration results” A paper by S. Mekhontsev, M. Noorma, A. Prokhorov, and L. Hanssen from NIST in the USA, Presented at Thermosense XXVIII, ed. by Jonathan J. Miles, G. Raymond Peacock, and Kathryn M. Knettel, Proc. of SPIE 6205, 620503 (2006). ABSTRACT: We summarize recent progress in our infrared (IR) spectral radiance metrology effort. [...]

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Emissivity Coefficients of Some Common Materials

November 25, 2008

We’ve been trying to preach to the inexperienced about Spectral Emissivity vs (just plain) emissivity. The former is the subject used in Thermal Infrared Radiation Thermometry (Pyrometry, to some) and users of Thermal Infrared Imagers (Thermographic or Thermography Cameras) while the latter is the domain of radiation heat transfer considerations (except of course when spectral [...]

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