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Heat
In physics, heat is a form
of energy associated with
the motion of atoms,
molecules and other
particles which comprise
matter; generally defined as
energy in motion. The amount
of heat exchanged by an
... > full story
Boiling point
The boiling point of a
substance is the temperature
at which it can change its
state from a liquid to a gas
throughout the bulk of the
liquid. A liquid may change
to a gas at temperatures
below the boiling point
... > full story
Laws of thermodynamics
The laws of thermodynamics,
in principle, describe the
specifics for the transport
of heat and work in
thermodynamic processes.
Since their conception,
however, these laws have
become some of the most
... > full story
Heat pump
A heat pump is a machine
which moves heat from a low
temperature reservoir to a
higher temperature reservoir
under supply of work. ... > full story
Browse Reference Articles
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Evaporation
Evaporation is one of the two forms of vaporization. It is the process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the ... > more -
Temperature
Temperature is the physical property of a system which underlies the common notions of "hot" and "cold"; the material with the higher temperature is said to be hotter. Physically, temperature is a ... > more -
Thermodynamics
Thermodynamics is a branch of physics that studies the effects of changes in temperature, pressure, and volume on physical systems at the macroscopic scale by analyzing the collective motion of their ... > more -
Absolute zero
Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. Absolute zero is the point at which the fundamental particles of nature have ... > more -
Mechanical engineering
Mechanical engineering is a very broad field of engineering that involves the application of physical principles for analysis, design, manufacturing, and maintenance of mechanical ... > more -
Statistical mechanics
Statistical mechanics is the application of statistics, which includes mathematical tools for dealing with large populations, to the field of mechanics, which is concerned with the motion of ... > more -
Phase (matter)
A phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i.e. density, crystal structure, index of refraction, and so ... > more -
Power station
A power station or power plant is a facility for the generation of electric power. At the centre of nearly all power stations is a generator, a rotating machine that converts mechanical energy into ... > more -
Electric power
Electric power is the amount of work done by an electric current in a unit time. When a current flows in a circuit with resistance, it does work. Devices can be made that convert this work into heat ... > more
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