The film explains the fundamentals of the molecular-kinetic theory.
Instrument readings.
Chaotic motion of gas molecules (animation).
Experience with balls.
Laboratory.
A woman is sorting wheat seeds.
The laboratory assistant selects the sprouted seeds.
An anthill.
Ants crawl along the trunk of a birch tree.
Brownian motion of molecules under a microscope.
Laboratory.
Auer's experience.
Portrait of Maxwell.
Stern's experience (animation).