Brownian Motion Evidence For Kinetic Theory of Gases

Brownian Motion Evidence For Kinetic Theory of Gases

brownian motion definition

Brownian motion is the continuous bombardment of particles as a result of the of the continuous rapid random motion of molecules of a fluid (liquid or gas).  

it is an irregular zigzag motion exhibited by molecules gas when tiny solid or smoke are suspended in it . this phenomenon is observed when a strong beam of light is passed through the fluid suspended with the  solid particles. the motion was first observed by a botanist called Robert brown, with the movement of plant pollen grains floating in water, hence it is named after him.

Brownian motion is one of the phenomenon that proves the kinetic theory of gases. with the following observation

1.      the continuous rapid zigzag motion of the solid particles indicate the continuous rapid  random motion of the molecules of the gas.

2.      the phenomena proves that gaseous molecules have kinetic energy.

3.      the phenomena shows how the particulate nature of gases.

4.      it shows that matters at microscopic level are not at rest.

a simple experiment to prove Brownian motion is to suspend some smoke particles in  an air(gas) vessel  and observe how the air molecules will bombard the smoke particles.