Volumetric Expansion of Liquids

The dilation of the liquid has some differences in expansion of solids, beginning with its expansion coefficients considerably higher and that for a volume of liquid is measured, it is necessary that it be within a container.


The law governing the expansion of liquids is essentially equal to the volumetric expansion of solids, since they can not expand linearly and not superficially, then:

 Thus, the actual liquid swelling is the sum of expansion apparent and the container.

To measure the apparent expansion tends to use a container filled to the brim. Upon heating this system (+ liquid container) and dilate both as the fluid can expand more than the solids, a quantity of liquid is poured, it measures the amount of liquid swelling apparent.

thus:

Using the expression of the volumetric expansion,, and assuming that the initial volumes of the container and liquid are the same, we can express:

That is, the actual coefficient of expansion of a liquid is equal to the sum of expansion apparent with the coefficient of expansion of the bottle where it is located.