In general , gas is present in large amount so it will be divided into gas bubbles of many different sizes ( the material is polydisperse ) separated by liquid regions which may form films , thinner and thinner when the liquid phase is drained out of the system films .
Gas is present in large amounts so it will be divided in gas bubbles separated by liquid regions which may form films , thinner and thinner when the liquid phase is drained out of the system .