2024年3月6日 · Heat is the thermal energy transfer between systems or bodies due to a temperature difference. Thermal energy, in turn, is the kinetic energy of vibrating and colliding particles. Heat occurs spontaneously from a hotter body to a colder one.

2025年2月3日 · heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder.

In thermodynamics, heat is energy in transfer between a thermodynamic system and its surroundings by modes other than thermodynamic work and transfer of matter. Such modes are microscopic, mainly thermal conduction, radiation, and friction, as distinct from the macroscopic modes, thermodynamic work and transfer of matter. [1] .

What is heat is defined as the degree of hotness or coldness of a given body. The other way of defining heat is the ability of a substance to transfer heat energy from one substance to another.

: a form of energy that causes substances to rise in temperature or to go through associated changes (as melting, evaporation, or expansion) : a warm flushed condition of the body (as after exercise) : a sensation produced by or like that produced by …

2023年8月4日 · Heat is what scientists call the form of energy that is transferred between two materials of different temperature. This transfer of energy occurs because of differences in the average translational kinetic energy per molecule in the two materials.

Define heat as transfer of energy. In Work, Energy, and Energy Resources, we defined work as force times distance and learned that work done on an object changes its kinetic energy. We also saw in Temperature, Kinetic Theory, and the Gas Laws that temperature is proportional to the (average) kinetic energy of atoms and molecules.