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Definition of First law of thermodynamics
1. Noun. The fundamental principle of physics that the total energy of an isolated system is constant despite internal changes.
Generic synonyms: Law Of Thermodynamics, Conservation
Medical Definition of First law of thermodynamics
1. This law, derived from the principle of conservation of energy, is expressed as E = Q - W, where E is the internal change in energy, Q is the heat the environment transfers into the system, and W is the work the system does. In other words, it means that: The internal energy in a system isolated from other systems remains constant The change in the internal energy of a system that is not isolated is equal to the energy that crosses its boundariesinto or out of other systemsIt can be further extrapolated to mean that despite all the processesgoing on in the universe, the total energy contained in the universeremains constant. (09 Oct 1997)
Lexicographical Neighbors of First Law Of Thermodynamics
Literary usage of First law of thermodynamics
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Text-book of Physics: Heat by John Henry Poynting, Joseph John Thomson (1906)
"first law of thermodynamics. Introductory Remarks—The Various Forms of Energy—The
Identity of Energy— The Conservation or Constancy of Energy —Statement of ..."
2. Higher Mathematics for Students of Chemistry and Physics: With Special by Joseph William Mellor (1902)
"The First Law of Thermodynamics. According to the discussion at the end of the
first chapter, one way of stating the first law of thermodynamics is as ..."
3. Principles of Thermodynamics by George Alfred Goodenough (1920)
"The First Law of Thermodynamics.—The principle of conservation of energy applied
to the conversion of heat into work is the first law of thermo-dynamics. ..."
4. Principles of Thermodynamics by George Alfred Goodenough (1911)
"CHAPTER III THE first law of thermodynamics 24. Statement of the First Law.
— The first law of Thermodynamics relates to the conversion of heat into work, ..."
5. Thermodynamics of the Steam-engine and Other Heat-engines by Cecil Hobart Peabody (1909)
"first law of thermodynamics. THE formal statement of the first law of thermodynamics
is: Heat and mechanical energy are mutually convertible, ..."
6. An Introduction to the Principles of Physical Chemistry from the Standpoint by Edward Wight Washburn (1921)
"The First Law of Thermodynamics.—We have just seen that the heat content of a
body or system of bodies arises from the kinetic and potential energy ..."
7. A Text Book of the Principles of Physics by Alfred Daniell (1884)
"We are now able to state the First Law of Thermodynamics. Heat, being a form of
Energy, can be measured in ergs. ..."
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