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 ...

Negative pressure is a rare and challenging-to-detect phenomenon in physics. Using liquid-filled optical fibers and sound waves, researchers have now discovered a new method to measure it. In ...

NPL has developed the first method for remotely measuring free-field sound pressure with direct traceability to fundamental SI base units for acoustic frequencies up to 20 kHz Scientists at the ...

Technicians new to static pressure measurement often wrestle with frustration and doubt as they learn this new skill. Two of the most common issues are uncertainty about pressure measurement results ...