Abstract
Radiometry is concerned with the measurement of radiated electromagnetic energy (see Spiro (1990) and Beaudoin and Bissieux (1992) for a more complete coverage of this matter). Contrary to measurement of time, frequency or voltage, where resolution of the order of 1 part in 1010 or even 1011 can be obtained, in radiometry a resolution of only a few percent is generally the best that can be envisaged and only in very careful experimental conditions. Reaching the fraction of a percent or even the percent itself is not an easy task. The mirage measurement (Sect. 2.3.2) is, however, an exception to this situation, with reported temperature measurement sensitivity of up to 10−8 K in rigorous laboratory conditions (temperature measurement of liquid CCl4 (Lepoutre and Roger 1987).
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© 1993 Springer-Verlag London Limited
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Maldague, X.P.V. (1993). Theoretical Aspects. In: Nondestructive Evaluation of Materials by Infrared Thermography. Springer, London. https://doi.org/10.1007/978-1-4471-1995-1_2
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DOI: https://doi.org/10.1007/978-1-4471-1995-1_2
Publisher Name: Springer, London
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