# Temperature-coefficient sentence example

The

**temperature coefficient**of conductivity has approximately the same value for most aqueous salt solutions.But the

**temperature coefficient**of conductivity is now generally less than before; thus the effect of temperature on ionization must be of opposite sign to its effect on fluidity.We can calculate the heat of formation from its ions for any substance dissolved in a given liquid, from a knowledge of the

**temperature coefficient**of ionization, by means of an application of the well-known thermodynamical process, which also gives the latent heat of evaporation of a liquid when the**temperature coefficient**of its vapour pressure is known.Abrupt alterations, take place in its density, specific heat, thermo-electric quality, electrical conductivity, temperature-coefficient of electrical resistance, and in some at least of its mechanical properties.

This apparatus was used to find the

**temperature coefficient**of the frequency of forks, the value obtained - .00011 being the same as that found by Koenig.AdvertisementThis frame or tube is so constructed of iron and brass (one-third iron and two-thirds brass) that its

**temperature coefficient**of linear expansion is the same as that of the platinumsilver alloy.This gives an average value of the conductivity over the range, but it is better to observe the temperatures at three distances, and to assume k to be a linear function of the temperature, in which case the solution of the equation is still very simple, namely, 0+Ze6 2 =a log r+b, (3) where e is the temperature-coefficient of the conductivity.

For these reasons the temperature-coefficient of the conductivity could not be determined satisfactorily on this particular form of apparatus, but the mean results were probably trustworthy to I or 2%.

Although this correction should be made if the definition were strictly followed, it is more convenient in practice to include the small effect of linear expansion in the temperature-coefficient in the case of solid bodies.

Further, by suitably choosing the positions of the deflectors and the coefficient of torsion of the fibre, it is possible to make the

**temperature coefficient**vanish.AdvertisementIf we regard the thermal effect at each junction as a measure of the potential-difference there, as the total thermal effect in the cell undoubtedly is of the sum of its potentialdifferences, in cases where the

**temperature coefficient**is negligible, the heat evolved on solution of a metal should give the electrical potential-difference at its surface.