If you think your blender just mixes things up real fast……..well, there's a lot more going on in there. And frankly that's what makes the difference between a proper blender and a cheap home appliance.
"[I]f you watch carefully, you'll also see tiny bubbles spinning off the blades. These bubbles, formed by the pressure drop of fluid accelerated over the arms of the blades, are cavitation bubbles. When they collapse, or implode, they create localized shock waves that further break up the blender's contents. This same effect is responsible for damage to boat propellers and lets you destroy glass bottles."