Answers.com > Wiki Answers > Categories > Science > Physics > What is a decibel?

What is a decibel?

In: Physics, Engineering [Edit categories]

Answer:

A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the power out to power in.

First answer by ID1256631989. Last edit by Porky121. Contributor trust: 150 [recommend contributor ]. Question popularity: 2 [recommend question].

[report abuse]

Can you answer these Physics questions?

	What are the branches of physics differentiate?	Answer it!
	What is light in physics?	Answer it!
	Why the flow of condensation is opposite to flow of heated solution?	Answer it!
	How are balanced and unbalanced forces alike?	Answer it!
	What is the physics sub branch?	Answer it!

Relevant answers:

You multiply or dividing the decibels by the decibels?
There is no point in doing either one of these.A decibel, being the log of a ratio, is added to or subtracted from another decibel.
What is decibel?
A decibel is a unit of measurement which is used to indicate how loud a sound is. Continuous exposure to sound above 80 decibels could be harmful. a unit for measuring the loudness of sound (deci- +...
Who was the decibel named after?
Alexander Graham Bell.Scroll down to related links and look at "Alexander Graham Bell - Wikipedia".
What is the decibels of a volcano?
It really depends how close you measure that noice to the volcano. The more far away the better for your ears.
What do decibels measure?
A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two levels.