Kosenkov D. V.1, Sagadeev V. V.1
1Kazan National Research Technological University, Kazan, Russia
Email: dmi-kosenkov@yandex.ru
An experimental study of the normal spectral emissivity ελ n of chemically pure copper, gold and silver in the solid polished and liquid phases of the state, near the melting point of the metal, was carried out. The measurement of ελ n was carried out using fixed passbands of narrowband filters. The dependence of the metal ελ n on the wavelength in the range of the radiation spectrum of 0.26-4.2 μm microns is obtained. A comparative analysis with the literary data of other authors is carried out. The results of the calculation of ελ n in the claimed experimental wave range according to the classical electromagnetic theory are presented Keywords: normal spectral emissivity, wavelength, solid polished phase, liquid phase, melting point region, copper, gold, silver.
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