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  1. No Access

    Article

    Microwave-Dimensional Measurements of Cylindrical Resonators for Primary Acoustic Thermometry

    Acoustic gas thermometry relies on the fundamental relationship between the speed of sound in a monatomic gas and its thermodynamic temperature. The speed of sound is calculated from the resonance frequencies ...

    R. J. Underwood, G. J. Edwards in International Journal of Thermophysics (2014)

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    Article

    A Novel Comparative Photothermal Method for Measuring Thermal Diffusivity

    A novel comparative method has been developed at the National Physical Laboratory (NPL) to measure the thermal diffusivity of semi-infinite samples without a priori knowledge of the boundary conditions. It is bas...

    M. Broussely, A. P. Levick, G. J. Edwards in International Journal of Thermophysics (2005)

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    Article

    Measurement of the Thermal Diffusivity of Solids with an Improved Accuracy

    A photothermal radiometry technique is being developed at the NPL with the goal of improving the accuracy of thermal diffusivity measurements. The principle is to perform a laser-induced thermal experiment whi...

    C. D. Martinsons, A. P. Levick, G. J. Edwards in International Journal of Thermophysics (2003)

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    Article

    A temperature-dependent dispersion equation for congruently grown lithium niobate

    G. J. Edwards, M. Lawrence in Optical and Quantum Electronics (1984)