Electrothermal is a term describing phenomena and processes involving the interconversion and interaction between electrical energy and thermal energy. It encompasses the study of effects where electrical energy is converted to heat and where thermal conditions influence electrical properties. This academic concept investigates specific mechanisms such as resistive heating (Joule effect) and thermoelectric effects (Seebeck, Peltier, Thomson effects). Key characteristics include energy conversion efficiency, thermal dissipation, and the temperature dependence of electrical transport properties. Its significance is fundamental to thermal management in electronic devices, the design of heating and cooling systems, energy harvesting technologies, and the development of advanced functional materials across various engineering and physics disciplines.