What is the difference between thermal conductivity and specific heat?

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Thermal conductivity and specific heat are both properties of materials related to their ability to conduct heat, but they have different meanings.

Thermal conductivity refers to a material's ability to conduct heat. It is the rate at which heat energy flows through a material per unit time and per unit area, when a temperature gradient is applied. Thermal conductivity is usually measured in units of watts per meter per Kelvin (W/mK) and is a measure of how easily heat can move through a material.

Specific heat, on the other hand, refers to the amount of heat required to raise the temperature of a unit mass of a material by one degree Celsius (or one Kelvin). It is a measure of the amount of heat energy that a material can store per unit mass, and is usually measured in units of joules per kilogram per Kelvin (J/kgK). Specific heat is a measure of a material's ability to absorb and retain heat energy.

To summarize, thermal conductivity measures how easily heat can move through a material, while specific heat measures how much heat energy a material can store per unit mass.

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