If you've ever seen a Jewish man with strings hanging out of his clothing, this is probably what you were seeing. There is no particular religious significance to the tallit (shawl) itself, other than the fact that it holds the tzitzit (fringes) on its corners.
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average, or equilibrium) atmospheric pressure, caused by a sound wave. In air, sound pressure can be measured using a microphone, and in water with a hydrophone. The SI unit of sound pressure is the pascal (Pa).
The sensitivity of an electrical pressure transducer may be regarded as that current or voltage that results from an input pressure of one millimeter of mercury. Such quantities are exceedingly small and must be amplified in order to cause a pen, beam of light, or beam of eIeetrons to inscribe a written record.