Nicole Kidman and Keith Urban have a new baby, courtesy of a surrogate ... TMZ has learned. Sources tell us ... the baby was born at Centennial Medical Center in Nashville on December 28, 2010.
Quick Answer. When talking about dishwashers, decibels refers to the noise level a dishwasher produces when it is in operation. The quietest dishwashers have decibel ratings around 40 and slightly below, while the noise level in decibels of a normal conversation is about 60.
In addition to sound level meters, dosimeters and octave band analyzers can be used to measure noise levels, as well as identify specific sources of noise. Sound level meters are often used in the workplace to evaluate the level of unwanted noise.