Brownian movement It is the random particle movement suspended in a liquid or gas. The movement is caused by particles that collide with each other.
Brownian Motion is named after a botanist, Robert Brownwho noticed the pollen grains that moved randomly under a microscope. Although pollen grains are much larger than water molecules, there were still enough collisions to move.
Robert Brown did not understand why the pollen grains they observed moved, but he was the first scientist to document this type of movement. It was Albert Einstein who explained that the water molecules were moving the pollen grains, and the Brownian movement was used as evidence of the kinetic theory of matter.
This video explains the Brownian movement brilliantly!
What is the difference between the Brownian movement and the diffusion?
- Diffusion is particle movement of a high to low concentration. The particles have a travel address. In Brownian movement, the particle movement is random.
- Diffusion occurs when there is a concentration gradient. The Brownian movement occurs due to the movement of other particles in the liquid or gas.
Science concepts
Diffusion
Brownian movement
Last update on June 26, 2023 by Emma Vanstone
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