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 energy of a gas?What is meant...
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 is a relative frequency distribution?How does...
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 does a direction of oscillation have...
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 gases is based?How can the pressure...
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 one freeze faster with wet skin...
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. This article provides answers to the...