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energy density

the amount of energy stored in a given system or region of space per unit volume. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for energy density
  • Nothing matches the energy density of fossil fuels in an increasingly energy-hungry world.
  • As a fuel, ethanol has a lower energy density and therefore needs more of it to do the same job.
  • This, he claims, allows it to achieve more than three times the energy density of lithium-ion batteries.
  • The energy density of fossil fuels and renewables will not continue this trajectory.
  • But in flight, energy density is far more crucial than even for cars.
  • Transport uses liquid hydrocarbons due to their high energy density.
  • And while they've made impressive improvements, none come anywhere close to competing with gasoline's energy density.
  • The material also happens to be cheap, environmentally benign, and has a high energy density.
  • There isn't enough energy density in sunlight to support an industrial society.
  • If you want energy density, you use supernova fragments.
energy density in Science
energy density  
See under density.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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