power density
Energy per unit volume
Power density is the amount of power per unit of volume or area.
In physics and engineering, it measures how concentrated energy output is within a given space: The power density of lithium batteries exceeds that of older technologies.
Higher power density means more energy delivered from a smaller source—crucial in applications from electronics to nuclear reactors.
- miniaturizationReducing physical scale significantly
- compact designEfficient use of limited space
- capacitorCharge-storing circuit element
- batteryPortable electricity storage
- heatTransferred thermal energy
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