Convection in Liquids & Diffusion HD

Convection of a hot liquid through a cold liquid (left), and the relatively slow diffusion of a hot liquid through a cold liquid (right). It can be seen as the less dense warm water rises through the denser cold water on the left whilst the less dense warm water on the right stays on top of the cold water until the temperatures have equalised. The slow diffusion of the warm particles introp the cold can be explained through brownian motion. I will update this with a better descriiption later...