thermodynamics - Does thermal energy include the energy of …
2023年2月22日 · Just because one body has more thermal energy than another does not necessarily mean that it is a higher temperature. Using the definition of heat I gave at the start, the flow of energy between two bodies at differing temperatures, in the form of (infra-red) radiation, can be called heat.
Difference between "Heat" and "Thermal Energy" - Physics Stack …
2016年11月4日 · As you said particles in the system move and thus part of the internal energy is given by the particles' kinetic energy. Thermodynamics tells us that the average kinetic energy depends on the temperature and is therefore dubbed "Thermal Energy". Thermal Energy is of course energy, it is a quantity associated to a system at a given temperature.
Thermal energy vs. internal energy? - Physics Stack Exchange
2016年9月6日 · Thermal energy The kinetic energy associated with the random motions of the molecules of a material or object; often used interchangeably with the terms heat and heat energy. Measured in joules, calories, or Btu.
Definition of energy in relation to thermal energy - Physics Stack …
2020年9月19日 · Thermal energy can and does do work. Thermal energy is the energy possessed by a system due to the motion of particles within that system. Thermal energy is a type of energy, where indeed "energy" can be defined as "the capacity or ability to do work". And yes, mechanical work is the movement of an object due to an applied force.
Thermal energy vs Temperature - Physics Stack Exchange
2023年2月13日 · The second part (Thermal energy is the measure of total kinetic energy of the body) is more problematic. First of all, because Thermal energy is an ill-defined concept that can be referred to different concepts (total energy, kinetic energy).
Kinetic vs. Thermal energy - Physics Stack Exchange
2020年5月11日 · Yet when examining thermal energy, the conceptual focus is on the particles themselves as objects. To understand thermal energy, it is good to recall the concept of internal energy. The question above is typical of what I would ask at high school or grade 12/13 level to check for understanding. Internal energy, Hyperphysics
thermodynamics - Definition of heat - Physics Stack Exchange
2024年2月5日 · The first describes the mechanism for transferring energy between substances of different temperature, the other describes the amount of energy transferred due to the temperature difference. Either way, the definition differentiates heat from the other form of energy transfer in thermodynamics, namely work, where work is the transfer of energy ...
Confusion about term TS in definition of Helmholtz free energy
2022年2月9日 · Textbook Thermal Physics (Danil V. Schroder), pages 150-151. I have a problem with the following extract: ...
thermodynamics - Thermal Velocity - Physics Stack Exchange
The thermal velocity is the speed that a particle would have if its kinetic energy happened to be equal to the average value. Thus for an ideal gas $$ \frac{1}{2}mv^2 = \frac{3}{2}kT$$ and $$ v = \sqrt{\frac{3kT}{m}}$$ For a system of particles of known mass, the thermal velocity depends only on the temperature and a universal constant.
What is the (quantum) definition of thermal equilibrium?
2018年9月21日 · What is the necessary condition for a quantum system to be in thermal equilibrium? The quantum systems I have in mind are a bunch of cold atoms, of photons in a cavity. Does a system need to obey a thermal equilibrium distribution (e.g. Bose-Einstein, Fermi-Dirac) in order for it to be in thermal equilibrium? Or the other way round?