Why is vigorous trituration required to prepare emulsions?

This is done to dilute a very  potent drug powder. An aliquot of the mixture contained the desired quantity of the substance at a certain amount to maintain the accuracy of the active component of the emulsion. Emulsions are mixture of two liquids that are immiscble. Fine dispersion of minute droplets can be observed in one liquid when this happens. Emulsions are part of  general class with 2 phase system called colloids.

12 is probably the typical age for a first kiss but i think its to young.