When specifying cooling equipment, engineers are faced with myriad decisions affecting performance and layout. One critical consideration is the noise emitted. As population density rises in major ...

Despite the threat of overfishing in many fish populations, fisheries managers often lack accurate plans and quota systems to allow a sustainable harvest. Traditional methods of estimating fish ...

THERE are two methods of measuring the amounts of sound absorbed by various materials. One is the reverberation method of W. C. Sabine, in which a specimen of the material to be tested is mounted on ...

Foresters and researchers are using sound to look inside living trees. A new study presents methods for use of sonic tomography, which measures wood decay by sending sound waves through tree trunks.