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Energy Density
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Geliefert zwischen Di., 10.02.2026 und Mi., 11.02.2026
Details
Energy density is a term used for the amount of energy stored in a given system or region of space per unit volume, or per unit mass, depending on the context. The latter is more formally known as specific energy. In some cases it is obvious from context which quantity is most useful: for example, in rocketry, energy per unit mass is the most important parameter, but when studying pressurized gas or magnetohydrodynamics the energy per unit volume is more appropriate. In a few applications (comparing, for example, the effectiveness of hydrogen fuel to gasoline) both figures are appropriate and should be called out explicitly. (Hydrogen has a higher energy density per unit mass than does gasoline, but a much lower energy density per unit volume).Energy per unit volume has the same physical units as pressure, and in many circumstances is an exact synonym: for example, the energy density of the magnetic field may be expressed as (and behaves as) a physical pressure, and the energy required to compress a gas may be determined by multiplying the pressure of the compressed gas by its change in volume.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130227982
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Sprache Englisch
- Genre Physik & Astronomie
- Größe H220mm x B150mm x T8mm
- Jahr 2009
- EAN 9786130227982
- Format Fachbuch
- ISBN 978-613-0-22798-2
- Titel Energy Density
- Untertitel Energy, Volume, Rocket, Hydrogen, Magnetohydrodynamics, Gasoline, Power-to-weight ratio, Figure of merit, Energy content of biofuel, Heat of combustion, Rechargeable battery, Specific impulse
- Gewicht 225g
- Herausgeber Alphascript Publishing
- Anzahl Seiten 140
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