How does an aerator work and saves water?

Aerator, i.e. a tiny, round ring with a fine mesh inside, which is screwed to the tap. How does it work and how does it contribute to saving water?

The most important element of the aerator is the mesh mentioned at the beginning. It is due to the fact that the water overflows through many small meshes that it becomes aerated. The stream of water enriched with a huge amount of air bubbles has a greater volume. We can, for example, wash a plate or hands faster with a larger volume of liquid.

A aerator in its simplest form does not restrict the flow of water, it flies the same as without a aerator. However, it saves water because it increases its volume through aeration, which means that we simply use less of it.