The heat transfer phenomenon has been known and used every day for a long time. However, these phenomena are only belatedly understanding. In the nineteenth century, for a long time heat was considered a special liquid and vapor fire is considered an element. Joseph Fourier in 1822 published a theory explaining the thermal conductivity.? Experience the heat equation is characterized by the gradual dissipation of the initial temperature by a heat flow from warmer areas to cooler areas of an object. In general, many different states and many different initial conditions would come to the same equilibrium.
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