18 results about "Temperature coefficient" patented technology

A temperature coefficient describes the relative change of a physical property that is associated with a given change in temperature. For a property R that changes when the temperature changes by dT, the temperature coefficient α is defined by the following equation: dR/R=α dT Here α has the dimension of an inverse temperature and can be expressed e.g. in 1/K or K⁻¹. If the temperature coefficient itself does not vary too much with temperature and αΔT≪1, a linear approximation will be useful in estimating the value R of a property at a temperature T, given its value R₀ at a reference temperature T₀: R(T)=R(T₀)(1+αΔT), where ΔT is the difference between T and T₀.