often represent power ratios and root-power ratios, values for both are shown below. The bel is traditionally used as a unit of logarithmic power ratio, while the neper is used for logarithmic root-power (amplitude) ratio.

Examples

* Calculating the ratio in decibels of 1 kW (one kilowatt, or watts) to 1 W yields:
* The ratio in decibels of 1={{radic V ? 31.62 V}} to 1 V is: 1=(31.62 V / 1 V)² ? 1 kW / 1 W, illustrating the consequence from the definitions above that L_G has the same value, 30 dB,

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