MOVEMENT OF POLLEN GRAINS IN WATER :-
The best evidence for the existence and movement of particles in liquids was given by Robert Brown in 1827. Robert Brown suspended extremely small pollen grains in water. On looking through the microscope, it was found that the pollen grains were moving rapidly throughout water in a very irregular way(OR ZIG-ZAG WAY).
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| movement of pollen grains in water |
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| Robert Brown |
BROWNIAN MOTION :-
Zig - zag motion (in a very irregular way) of particles is known as Brownian motion. Brownian motion can also be observed in gases.Sometimes, when a beam of light enters a room, we can see tiny dust particles suspended in air which are moving rapidly in a very random way. This is an example of Brownian motion in gases.
The tiny dust particles move here and there because they are constantly hit by the fast moving particles of air.
𖤍Matter is made up of tiny particles of air.
𖤋Particles of matter are constantly moving.
👉BROWNIAN MOTION INCREASES ON INCREASES ON INCREASING THE TEMPRATURE
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| Brownian Movement |
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