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free energy

(Encyclopedia)free energy or Gibbs free energy, quantity derived from the relationships between heat and work studied in thermodynamics and used as a measure of the relative stability of a physical or chemical syst...

dark energy

(Encyclopedia)dark energy, repulsive force that opposes the self-attraction of matter (see gravitation) and causes the expansion of the universe to accelerate. The search for dark energy was triggered by the discov...

United Nations Atomic Energy Commission

(Encyclopedia)United Nations Atomic Energy Commission: see disarmament, nuclear. ...

Energy, United States Department of

(Encyclopedia)Energy, United States Department of, executive department of the federal government responsible for coordinating national activities relating to the production, regulation, marketing, and conservation...

nuclear winter

(Encyclopedia)nuclear winter, theory holding that the smoke and dust produced by a large nuclear war would result in a prolonged period of cold on the earth. The earliest version of the theory, which was put forwar...

nuclear structure

(Encyclopedia)nuclear structure: see nucleus. ...

nuclear waste

(Encyclopedia)nuclear waste: see radioactive waste. ...

Gibbs free energy

(Encyclopedia)Gibbs free energy: see free energy. ...

nuclear magnetic resonance

(Encyclopedia)nuclear magnetic resonance: see magnetic resonance. ...

nuclear test-ban treaty

(Encyclopedia)nuclear test-ban treaty: see disarmament, nuclear. ...