McDaniel, J. Gregory Department of Aerospace and Mechanical Engineering, Boston University, Boston, Massachusetts.
- Interpretation of real and imaginary parts
- Circular aperture in planar baffle
- Acoustic reflection from a fluid interface
- Links to Primary Literature
- Additional Readings
The ratio of the complex amplitude of spatially averaged acoustic pressure over a surface to the complex amplitude of volume velocity on that surface. The unit is the newton-second/meter5, or the mks acoustic ohm. In the cgs system the unit is the dyne-second/centimeter5. The volume velocity is the integral over the surface of the particle velocity normal to the surface. Acoustic impedance measures the degree to which an acoustic medium impedes the fluid motion created by an imposed pressure. It was originally defined by analogy to electrical systems. See also: Electrical impedance; Sound pressure; Units of measurement
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Its dedicated editorial team is led by Sagan Award winner John Rennie. Contributors include more than 9000 highly qualified scientists and 39 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 17,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information