Design of a Heat-Flow-Meter for determining thermal conductivity (HFM method)

Heat-Flow-Meter method for determining thermal conductivity (HFM)

With the Heat-Flow-Meter method (HFM) the thermal conductivity is determined by comparative measurement of the heat flow using a reference sample. Learn more about this absolute measurement method in...
Design of a measuring device for the determination of thermal conductivity according to the Guarded-Hot-Plate Method (GHP)

Guarded-Hot-Plate method for determining thermal conductivity (GHP)

With the Guarded-Hot-Plate method (GHP) the thermal conductivity is determined by the electrical power output of a hot plate with guided heat conduction. Learn more about this measurement method...
Temperature curve along a heated thin rod

Heat equation (diffusion equation)

The heat equation describes the temporal and spatial behavior of temperature for heat transport by thermal conduction. Read more about it in this article.
Mean free path in a thin gas with low pressure and a dense gas with high pressure

Thermal conductivity of gases

The thermal conductivity of ideal gases is not dependent on pressure for gases that are not too strongly thinned. This is no longer the case for gases with low...
Experimental setup for the measurement of thermal conductivity

Experimental setup for determining thermal conductivity

In this article you can learn more about the experimental determination of the thermal conductivity of materials using steam and ice. This...
Sun as a blackbody with a surface temperature of 5778 K

Heat transfer by thermal radiation

With thermal radiation, heat is transferred by electromagnetic waves without the presence of a substance! You can read more about this mechanism in this article.
Heat transfer using the example of a central heating system

Heat transfer by thermal convection

With heat transfer by thermal convection, heat is transported with a flowing substance. Convection only occurs in fluids, i.e. gases and liquids. You will find more information in this...
Experiment to demonstrate heat transport by thermal conduction

Heat transfer by thermal conduction

Heat transfer by thermal conduction means that heat is conducted through a material. Heat energy is transferred from molecule to molecule at the atomic level. More information on this...
Heat flow from a hot object to a cooler one

Rate of heat flow: Definition and direction

The rate of heat flow refers to the heat energy transferred per unit of time ("heat output"). The drive for the heat flow is a temperature difference. Learn more...
Thermal conduction through a house wall

Thermal conductivity (Fourier’s law)

Thermal conductivity is a measure of how well or poorly a material conducts heat energy (measure of the strength of heat conduction)! You can read more about this in...
Mixing temperature when pouring cold milk into a cup of hot coffee

Heat and thermodynamic equilibrium

In thermodynamics, heat is the transport of energy due to a temperature difference. Heat in this respect is never "contained" in an object! Learn more about the thermodynamic concept...
Thermal image of a cup with hot tea and a building

Heat transfer (heat transport)

Heat transfer is the transport of thermal energy from a warmer object to a cooler object. A distinction is made between thermal convection, thermal conduction and thermal radiation. You...