Differbetween
What is the physical difference between thermal conductivity and thermal diffusivity? Thermal conductivity (l) is a property that determines HOW MUCH heat will flow in a material, while thermal diffusivity (a) determines HOW RAPIDLY heat will flow within it.
- What is the difference between conductivity and thermal conductivity?
- What is thermal conductivity?
- How do you use thermal diffusivity?
What is the difference between conductivity and thermal conductivity?
By definition, electrical conductivity is a measure of how well electrical current (charge in motion) can pass through a material under the influence of an applied voltage/electric field. Thermal conductivity measures how well heat (thermal energy in motion) can pass through a material under a temperature differential.
What is thermal conductivity?
Thermal conductivity can be defined as the rate at which heat is transferred by conduction through a unit cross-section area of a material, when a temperature gradient exits perpendicular to the area.
How do you use thermal diffusivity?
Thermal diffusivity is often measured with the flash method. It involves heating a strip or cylindrical sample with a short energy pulse at one end and analyzing the temperature change (reduction in amplitude and phase shift of the pulse) a short distance away.
