In both of these standards the change in temperature is measured by the change in pressure of a constant volume of the gas.
In the case of gases a distinction must be made between specific heat at constant volume, and at constant pressure.
If the gas is not allowed to expand but is preserved at constant volume, the entire heat added is that required to change the temperature only.
As an example, if the temperature of any volume of air or gas at constant volume is raised, say from 60 deg.
I] Usual Rise of Temperature due to Explosion at Constant Volume.
The rise of temperature above the original temperature T will be S/s degrees, where s is the specific heat at constant volume, which is obviously equal to S - R'.
The ratio of the adiabatic to the isothermal elasticity, required for calculating the velocity of sound, is therefore the same as the ratio of the specific heat at constant pressure to that at constant volume.
It is essentially a method of substitution employing a column of mercury of constant volume as the gauge for comparing the capacities of different parts of the tube.
But this is really of no consequence, since the specific heat at constant volume cannot be practically realized.
The difference between the two coefficients of expansion, for a constant pressure and for a constant volume, is explained by these relations.
He gave figures from which it was easy, as Professor Van t'Hoff found, to draw the conclusion that, in a constant volume, the osmotic pressure is proportional to the absolute temperature.
For instance, two gases may diffuse themselves one in the other in constant volume, but they could not conversely separate themselves spontaneously.
The constant volumecycle is so called because the heat required is added to the working fluid at constant volume.
But if the piston had been fixed the heat required for the same rise of temperature would have been Cv, the specific heat at constant volume.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "constant volume" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
