![]() "A powerful shearing force drives circulation by sucking liquid down from the top of the pitcher and then violently flinging it out to the sides. Video by ChefSteps - The Physics of Blending - Cavitation A combination of compressive shearing forces and cavitation that causes the blender to rip pieces of food into bits so small that the end result is a smooth puree or a rich emulsion. A lot of the kinetic energy from the fast-spinning blades will cause the temperature of the mixture in the blender to rise through friction.Īt this point and another set of forces (See What is Cavitation, below) take over. Since it takes a lot of kinetic energy to break pieces down very small, the final size in this step depends on the power of the blender. The second step is the food must begin to flow. ![]() ![]() The first step of a blender is therefore cutting, smashing, chopping. A stationary blender consists of a blender jar with a rotating metal blade at the bottom, powered by an electric motor in the base, an immersion blender has a motor on top connected by a shaft to a rotating blade at the bottom/ The immersion blender can be used with any container.įor a blender to be effective the particles must be small enough so that the mixture will flow. A blender is a kitchen and laboratory tool used to mix, puree, or emulsify food and other substances. ![]()
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