The **temperature coefficient** is the relative change of a physical property when the temperature is changed by 1 Kelvin.

In the following formula, let *R* be the physical property to be measured and *T* be the temperature at which the property is measured. *T*_{0} is the reference temperature, and Δ*T* is the difference between *T* and *T*_{0}. Finally, **α** is the (linear) temperature coefficient. Given these definitions, the physical property is:

Here α has the dimensions of an inverse temperature (1/K or K−1).

This equation is linear with respect to temperature. For quantities that vary polynomially or logarithmically with temperature, it may be possible to calculate a temperature coefficient that is a useful approximation for a certain range of temperatures. For quantities that vary exponentially with temperature, such as the rate of a chemical reaction, any temperature coefficient would be valid only over a very small temperature range.

Different temperature coefficients are specified for various applications, including nuclear, electrical and magnetic.

Read more about Temperature Coefficient: Negative Temperature Coefficient, Reversible Temperature Coefficient, Temperature Coefficient of Electrical Resistance, Coefficient of Thermal Expansion, Temperature Coefficient of Elasticity, Temperature Coefficient of Reactivity, Units

### Famous quotes containing the word temperature:

“This pond never breaks up so soon as the others in this neighborhood, on account both of its greater depth and its having no stream passing through it to melt or wear away the ice.... It indicates better than any water hereabouts the absolute progress of the season, being least affected by transient changes of *temperature*. A severe cold of a few days’ duration in March may very much retard the opening of the former ponds, while the *temperature* of Walden increases almost uninterruptedly.”

—Henry David Thoreau (1817–1862)