نتایج جستجو برای: thermal radiation
تعداد نتایج: 443055 فیلتر نتایج به سال:
The properties of thermal emission of hot bodies is a central topic in Modern Physics [1]. The dependence of the Planck’s law only on the body temperature T but not on its material properties make pirometry a universal pyrometric technique [2]. The blackbody emission consists of unpolarized, incoherent radiation for bodies whose size is larger than the typical thermal wavelength, λT = hc/kBT, w...
Thermal diffusivity of Au nanofluid was measured by using a dual beam mode-mismatched thermal lens method. The samples were prepared in various sizes by utilizing the gamma radiation method. In the dual beam mode-mismatched thermal lens, a diode laser (532 nm) was used as an excitation beam and a He-Ne laser with the beam output at 632.8 nm was used as a probe beam. Thermal diffusivity of gold...
Background: Exposure to high temperatures is common among workers in hot environments and can lead to physiological adverse effects. Heat radiation from hot surfaces and inflamed ways to get the most important heat is the exposure ways of the workers. The aim of this study was to evaluate the effectiveness of control methods of radiant heat in workers exposed in a blast furnace steel industry. ...
Temperature measurements are important for thermal-structural experiments in the thermal radiation heating environments such as used for thermal-structural stress analyses. This paper describes the use of multicolor pyrometry for the measurements of diffuse surfaces in thermal radiation environments that eliminates the effects of background radiation reflections and unknown emissivities based o...
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