first law of thermodynamics

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Noun1.first law of thermodynamics - the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes
law of thermodynamics - (physics) a law governing the relations between states of energy in a closed system
conservation - (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
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References in periodicals archive ?
Kim, "First law of thermodynamics and Friedmann equations of Friedmann-Robertson-Walker universe," Journal of High Energy Physics, vol.
All four models were simulated based on the first law of thermodynamics. The following assumptions were made.
Computations of pressure losses, work losses, efficiency and power of the processes revealed by the new PV/Px diagrams are draw using the first law of thermodynamics for processes with finite speed (Florea et al., 2009).
(That's a consequence of the first law of thermodynamics: energy is always conserved.) We thus have to look at the heat balance of our planet to understand the reason for the warming.
Conservation of energy (the first law of thermodynamics) tells us that obesity must result when caloric intake chronically exceeds caloric expenditures.
With the intention of helping readers attain such skills as flowcharting, performing degree of freedom analyses, identifying possible systems and subsystems, and applying the first law of thermodynamics, they describe real balanced and single unit processes, multiple unit process calculations, balances and reactive processes, multiple systems involving reaction recycling and purging, energy balance without reaction, energy balance with three actions, combined material and energy balances, unsteady state material and energy balances.
Even in a hypothetical situation where energy from the sun is transferred directly to Earth via a conduit the resultant work from energy overconsumption will result in global warming (First Law of Thermodynamics).
If you took physics or chemistry in school, remember the first law of thermodynamics.
One form of it is the first law of thermodynamics, which says that energy cannot be created from nothing.
In the absence of fields, the first law of thermodynamics (Plank, 1926; Callen, 1960; Gibbs, 1961; Kirkwood and Oppenheim, 1961; Lewis and Randall, 1961; Hatsopoulos and Keenan, 1965; Kestin, 1966; Tisza, 1966; Prausnitz, 1969; Modell and Reid, 1983; Guggenheim, 1988; Gyftopoulos and Beretta, 1991; Denbigh, 1993) relates the change in internal energy of a system to the changes that occur at its boundaries.
(1) The First Law: The law of conservation of energy has a number of titles including the First Law of Thermodynamics. In its most general form it suggests that the total energy in the Universe is constant.
The First Law of Thermodynamics states that "What goes in must come out", (that's the gist of it anyway).