Thermal Conductivity

We use hot water bags to soothe body pain

The hot water bag transfers the heat to our body and provides relief

This method of transfer of heat within a body or from one body to the other is known as Conduction

Let us learn more about Conduction

Conduction occurs due to the transfer of heat by molecules vibrating at their mean positions

The bodies between which the heat transfer occurs are in contact with each other

There is no actual movement of matter while transferring heat from one location to the other

Materials that possess the intrinsic ability to transfer or conduct heat are known as Conductors or Thermal Conductors

The measure of its ability to transfer or conduct heat is known as Thermal Conductivity. It is denoted by

Let's learn about Thermal Conductivity in detail

Thermal conduction occurs through molecular agitation when bodies come in contact with each other

It does not result in the movement of the solid itself

Heat moves along a temperature gradient

It moves from an area of high temperature and high molecular energy to an area with a lower temperature and lower molecular energy

This heat transfer will continue until the bodies attain thermal equilibrium

The rate at which heat is transferred depends upon the temperature gradient and the thermal characteristics of the material

Thermal conductivity can be calculated using the equation,

Where, =Heat flow =Length of the material =Surface area of the material =Temperature gradient

Thermal conductivity is measured in the units of

Revision

Thermal conductivity describes the transport of energy – in the form of heat – through a body of mass as the result of a temperature gradient

Thermal conductivity() can be calculated using the equation,

Where, =Heat flow =Length of the material =Surface area of the material =Temperature gradient

Thermal conductivity is measured in the units of

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