Rayl


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rayl

[rāl]
(acoustics)
A unit of specific acoustical impedance, equal to a sound pressure of 1 dyne per square centimeter divided by a sound particle velocity of 1 centimeter per second. Also known as specific acoustical ohm (Ωs ); unit-area acoustical ohm.

Rayl

 

a rarely used unit of specific acoustic impedance in the cgs system of units (see ACOUSTIC IMPEDANCE). It was named in honor of the British physicist Lord Rayleigh. The rayl is the magnitude of a medium’s specific acoustic impedance for which a sound pressure of 1 dyne/cm2 produces a linear velocity of 1 cm/sec in the particles of the medium; 1 rayl = 1 dyne-sec/cm3 = 10 newton-sec/m3.

References in periodicals archive ?
Rayl noted that the three main MOOC providers approach funding differently: Udacity and Coursera are venture capital companies, so once their initial investment runs out, they need to turn a proit; edX is a nonproit company funded by a $60 million infusion from MIT and Harvard, but the company will also eventually need to be self-sustaining.
Rayl, VP and Treasurer * rayl@riskoverwatch.com * 620-727-1033
(Contains 105 footnotes.) [This paper was written with assistance from Michael Horn, Beverly Knox-Pipes, Bethany Rayl, Dan Schultz, Heather Staker, Thomas Svitkovich, and Tom Watkins.]
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In: Lenihan, D.J., Carrell, T.L., Fosberg, S., Murphy, L., Rayl, S.L., and Ware, J.A., eds.
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A number of characteristics of the acoustical material are reported, including specific airflow resistance (rayl), airflow resistivity (rayl/m) and airflow resistance (ohm).