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Evaluation of Uncertainties in Fundamental Radiometric Measurements



Benjamin K. Tsai, Bettye C. Johnson


The uncertainty of measurements is critical in furthering the development of radiometric science and acquiring an increased understanding of its principles. Proper analysis of measurement uncertainties provides an indication of how well the measurements have been made, and also helps assess the results of comparisons. Uncertainties are necessary to quantify statements concerning traceability to the International System of Units. Three examples in the field of radiometry are presented for evaluation. Employing statistical theorems, the combined standard uncertainty of the signal integral or the temperature is derived.


absolute radiometry, experimental uncertainties, measurement equation, radiometric traceability


Tsai, B. and Johnson, B. (1998), Evaluation of Uncertainties in Fundamental Radiometric Measurements, Metrologia (Accessed April 22, 2024)
Created October 1, 1998, Updated February 17, 2017