How to make conduction in home

                                                                                Conduction
Conduction is defined as the transfer of energy from the more energetic particles of a substance to the less adjacent ones as a result of interactions between the particles. Conduction can take place in solids, liquids or gases. In gases and liquids, conduction is due to the collisions and diffusion of the molecules during their motion.                                                                                                                                                   In solids, conductuion takes place due to the combination of vibrations of the molecules in a lattice and the energy transport by free electrons. For example, a cold canned drink present in a warm room warms up to the room temperature due to the heat transfer from the room to the drink through the aluminium can by conduction. The rate of heat conduction through a medium depends on the following factors:
1.     Geometry of medium
2.      Its thickness
3.      Material of the medium
4.      Temperature difference across the medium
The rate of heat conduction through a plane layer is directly proportional to the temperature difference across the layer and the heat transfer area, but it is inversely proportional to the thickness of the layer.


The expression in above equation is known as Fourier's law of heat conduction after J.Fourier, who expressed it first in his heat transfer text in 1822.
The term dT/dx is the temperature gradient, which is known as the slope of the temperature curve on a T-x diagram, at location x. The heat transfer area A is always normal to the direction of heat transfer. 
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