Degrees of freedom of a molecule

Internal energy & heat capacity of ideal gases

This article provides answers to the following questions, among others: What is the internal energy of a gas?What are the characteristics of the thermal...
Design of a velocity selector to determine the speed distribution in gases

Determination of the speed distribution in a gas

This article provides answers to the following questions, among others: How can the speeds of the particles in a gas be determined experimentally?What is a histogram?What...
Pressure distribution during compression of a gas

Equipartition theorem

This article provides answers to the following questions, among others: What statement does the equipartition theorem provide?What is a degree of freedom in the thermodynamic sense?Why...
Randomly distributed velocities of the particles of a gas

Pressure and temperature

This article provides answers to the following questions, among others: What is the kinetic theory of gases?What are the assumptions on which the kinetic theory of...
Schematic illustration of an evaporation process

Why do liquids evaporate?

This article provides answers to the following questions, among others: How can the evaporation of liquids be explained?Why does a cooling effect occur during evaporation?Why does...
Momentum transfer as the cause of viscosity in ideal gases

Viscosity of an ideal gas

The viscosity of ideal gases is mainly based on the momentum transfer due to diffusion between the fluid layers. Learn more about it in this article.