physics, energy density is the amount of energy stored in a given system or region of space per unit volume. It is sometimes confused with energy per unit...
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Sound energy density or sound density is the sound energy per unit volume. The SI unit of sound energy density is the pascal (Pa), which is 1 kg⋅m−1⋅s−2...
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power spectral density (PSD) then refers to the spectral energy distribution that would be found per unit time, since the total energy of such a signal...
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This is an extended version of the energy density table from the main Energy density page: Prelas, Mark (2015). Nuclear-Pumped Lasers. Springer. p. 135...
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Specific energy or massic energy is energy per unit mass. It is also sometimes called gravimetric energy density, which is not to be confused with energy density...
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radiation at energy densities in excess of about 100 GJ/m^3. High energy density (HED) science includes the study of condensed matter at densities common to...
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energy–momentum tensor, is a tensor physical quantity that describes the density and flux of energy and momentum in spacetime, generalizing the stress tensor of Newtonian...
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radiant energy density is the radiant energy per unit volume. The SI unit of radiant energy density is the joule per cubic metre (J/m3). Radiant energy density...
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Power density, defined as the amount of power (the time rate of energy transfer) per unit volume, is a critical parameter used across a spectrum of scientific...
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Universe (redirect from Energy density of the Universe)
"dark energy", an unknown form of energy that is hypothesized to permeate space. On a mass–energy equivalence basis, the density of dark energy (~ 7 ×...
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The distortion free energy density is a quantity that describes the increase in the free energy density of a liquid crystal caused by distortions from...
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Specific energy density may refer to: Energy density, energy per unit volume Specific energy, energy per unit mass This disambiguation page lists articles...
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Magnetic field (redirect from Magnetic field energy density)
materials (such that B = μH where μ is frequency-independent), the energy density is: u = B ⋅ H 2 = B ⋅ B 2 μ = μ H ⋅ H 2 . {\displaystyle u={\frac {\mathbf...
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nearly negligible. Dark energy's density is very low: 7×10−30 g/cm3 (6×10−10 J/m3 in mass-energy), much less than the density of ordinary matter or dark...
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HK theorem defines an energy functional for the system and proves that the ground-state electron density minimizes this energy functional. In work that...
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A strain energy density function or stored energy density function is a scalar-valued function that relates the strain energy density of a material to...
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Density (volumetric mass density or specific mass) is a substance's mass per unit of volume. The symbol most often used for density is ρ (the lower case...
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Dual-energy X-ray absorptiometry (DXA, or DEXA) is a means of measuring bone mineral density (BMD) using spectral imaging. Two X-ray beams, with different...
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batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life. Also...
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T^{4}.} The Stefan–Boltzmann law expressed as a formula for radiation energy density is: w e ∘ = 4 c M ∘ = 4 c σ T 4 , {\displaystyle w_{\mathrm {e} }^{\circ...
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spectral energy density. Signal processing Parseval's theorem Spectral density Inner product Mathuranathan (2013-12-20). "Power and Energy of a Signal :...
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Friedmann equations (redirect from Density parameter)
of light in vacuum). ρ and p are the volumetric mass density (and not the volumetric energy density) and the pressure, respectively. k is constant throughout...
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Lithium iron phosphate battery (redirect from OptimumNano Energy)
Maximum charge voltage = 3.60-3.65 V Volumetric energy density = 220 Wh/L (790 kJ/L) Gravimetric energy density > 90 Wh/kg (> 320 J/g). Up to 160 Wh/kg (580 J/g)...
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Expansion of the universe (section Density)
{\displaystyle \rho } is the energy density. The parameter w {\displaystyle w} is the equation of state parameter. The energy density of such a fluid drops as...
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particularly general relativity, an energy condition is a generalization of the statement "the energy density of a region of space cannot be negative"...
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Big Bang (section Dark energy)
total energy density. Curvature is negative if its density is less than the critical density; positive if greater; and zero at the critical density, in...
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Vacuum energy is an underlying background energy that exists in space throughout the entire Universe. The vacuum energy is a special case of zero-point...
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Local-density approximations (LDA) are a class of approximations to the exchange–correlation (XC) energy functional in density functional theory (DFT)...
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expanding space behind it, under the assumption that a configurable energy-density field lower than that of vacuum (that is, negative mass) could be created...
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Sodium-ion battery (section Natron Energy)
batteries to increase energy density. One side provides interaction sites while the other provides inter-layer separation. Energy density reached 337 mAh/g...
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