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Kinetic theory of gases

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. Definition of viscosity In the article Viscosity, the cause of viscosity was mainly attributed...
Degrees of freedom of a molecule

Internal energy & heat capacity of ideal gases (kinetic theory of gases)

In this article, learn more about the relationship between internal energy and heat capacity in connection with the kinetic theory of gases. https://www.youtube.com/watch?v=M9i8YfBu30w Internal energy In the article equipartition theorem it has already been...
Design of a velocity selector to determine the speed distribution in gases

Determination of the speed distribution in a gas

Learn more about experimentally determining the velocity distribution of molecules in gases in this article. https://www.youtube.com/watch?v=OVcen-FWc-4 Introduction As already explained in the article Temperature and particle motion, the temperature of a gas is a...
Microscopic interpretation of the gas pressure

Pressure and temperature (kinetic theory of gases)

In this article, learn more about the relationship between pressure and temperature in connection with the kinetic theory of gases. https://www.youtube.com/watch?v=3NYFD9LMV2A Introduction In order to connect the macroscopically observed state variables of a gas...
Pressure distribution during compression of a gas

Equipartition theorem

The equipartition theorem states that the kinetic energy of the gas molecules is equally divided along all three spatial directions! https://www.youtube.com/watch?v=wxFbzgYe9cM Equipartition theorem In the article Pressure and temperature the following equation was derived...
Schematic illustration of an evaporation process

Why do liquids evaporate?

In this article, learn how the evaporation of liquids can be qualitatively explained using the Maxwell-Boltzmann distribution. Maxwell-Boltzmann distribution of ideal gases The figure below shows the speed distribution according to Maxwell-Boltzmann for...