 Materials Design Center Processes Unit Conversion Formulas Mathematics Calculators Discussion Forum Trade Publications Directory Service
Design-2-Part

How OEM's can make their parts better, faster, and more efficient.

Desktop Engineering

Design, simulation, test, prototyping and high performance computing.

Chemical Engineering

The industry gateway for chemical engineering and plant operations.

Offshore

International news and technology for marine/offshore operations around the world.

more free magazines       Glossary » Units » Logarithm of a Ratio » Decibel (power) Decibel (power) (dB (power)) is a unit in the category of Logarithm of a ratio. It is also known as decibels. This unit is commonly used in the SI unit system. Decibel (power) (dB (power)) has a dimension of nil (log) where L is length, N is amount of substance, and I is electric current. It essentially the same as the corresponding standard SI unit dB.
Note that the seven base dimensions are M (Mass), L (Length), T (Time), Q (Temperature), N (Aamount of Substance), I (Electric Current), and J (Luminous Intensity).

Other units in the category of Logarithm of a ratio include Bel (power) (B (power)), Bel (voltage) (B (voltage)), Decibel (voltage) (dB (voltage)), and Neper (NP).   