Puniki kaanggen antuk mangukur kilangnya tingkat tegangan ring transmisi sinyal listrik, antuk ngambarin tingkat daya suara ring akustik, lan absorbansi sunaran ring widang spektrometri lan optik.
It is used to quantify the loss of voltage levels in transmitting electrical signals, to describe power levels of sounds in acoustics, and the absorbance of light in the fields of spectrometry and optics.