(a) What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain) during Brownian motion. (b) In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?

Question

Philoid · Accepted Answer

(a) The zig-zag or random path travelled by the particles of matter is called Brownian motion.

(b) The continous zig zag movement of tiny dust particles suspended in air results from their collision by the fast moving particles of air. This haphazard or random portion of particles is known as Brownian motion.

(a) What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain) during Brownian motion.(b) In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?

(a) What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain) during Brownian motion.
(b) In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?