energy density
121Gravitational binding energy — The gravitational binding energy of an object consisting of loose material, held together by gravity alone, is the amount of energy required to pull all of the material apart, to infinity. It is also the amount of energy that is liberated… …
122Intermittent energy source — An intermittent energy source is any source of energy that is not continuously available due to some factor outside direct control. The intermittent source may be quite predictable, for example, tidal power, but cannot be dispatched to meet the… …
123Population density — (people per km2) by country, 2006 …
124Convective available potential energy — A skew T plot showing a morning sounding with a large hydrolapse followed by an afternoon sounding showing the cooling which occurred in the mid levels resulting in an unstable atmosphere as surface parcels have now become negatively buoyant. The …
125Bone density — (or bone mineral density) is a medical term referring to the amount of matter per cubic centimeter of bones. [MeshName|Bone+Density] It is measured by a procedure called densitometry , often performed in the radiology or nuclear medicine… …
126Time-dependent density functional theory — (TDDFT) is a quantum mechanical method used inphysics and chemistry to investigate the proprieties of many body systems beyond the ground statestructure. It s an extension of density functional theory (DFT) to the time dependent domain asa method …
127Charge carrier density — The charge carrier density denotes the number of charge carriers per volume. It is measured in m−3. As any density it can depend on position. It should not be confused with the charge density, which is the number of charges per volume at a given… …
128Fusion energy gain factor — The fusion energy gain factor, usually expressed with the symbol Q, is the ratio of fusion power produced in a nuclear fusion reactor to the power required to maintain the plasma in steady state.In a fusion power reactor a plasma must be… …
