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Describe an experiment to demonstrate Brownian motion in liquids

Describe an experiment to demonstrate Brownian motion in liquids.

Answers

Moraa
i. Pour water into the beaker about ¾ full.
ii. Sprinkle pollen grains on the surface of the water.
iii. Cover the beaker with a transparent lid.
iv. By the use of a hand lens, observe the behavior of the pollen grains on the water surface.
Observation
The pollen grains suspended in the water are in constant random motion.
The pollen grains are constantly knocked by smaller invisible particles of water from all sides. The net force on the pollen grain at any instant makes it to move with an irregular pattern. This is called Brownian motion.
Moraa orina answered the question on April 6, 2018 at 17:11

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