acoustic impedance वाक्य
उदाहरण वाक्य
मोबाइल
- In the bass register, a second factor affecting the inharmonicity is the resonance caused by the acoustic impedance of the piano sounding board.
- "f " f is the frequency of the fundamental . " Z " q is the acoustic impedance of material.
- Biophysicists have implicated acoustic impedance, or the ratio of acoustic pressure to particle velocity, as a factor contributing to blast damage in vivo.
- Seismic waves are mechanical perturbations that travel in the Earth at a speed governed by the acoustic impedance of the medium in which they are travelling.
- This occlusion effect occurs with seashells, cups, or hands held over one's ears, and also with acoustic impedance to external sounds.
- The most well-known type is a B-mode image, which displays the acoustic impedance of a two-dimensional cross-section of tissue.
- When the compression waves reach areas of high acoustic impedance mismatch ( such as the opposite side of the target ), tension waves reflect back and create spalling.
- When a seismic wave travelling through the Earth encounters an interface between two materials with different acoustic impedances, some of the wave energy will refract through the interface.
- Note that the properties of a film as determined with the QCM are fully specified by two parameters, which are its acoustic impedance, " Z"
- Wave transitions between tissues with significantly different acoustic impedances, particularly between the external environment and bone, causes focal mechanical damage as a result of wave energy dissipation.
- Where R is the fraction of reflection, and z 1 and z 2 are the acoustic impedances of the two materials, analogous to refractive index in light propagation.
- It was found that a layer with high acoustic impedance with a backing of a softer, low acoustic impedance layer ( such as low density foam ) would protect from blast injury.
- It was found that a layer with high acoustic impedance with a backing of a softer, low acoustic impedance layer ( such as low density foam ) would protect from blast injury.
- This sound pulse is reflected back to a microphone and this reflection is generated according to the changes in the local acoustic impedance related to cross-sectional area of the nasal cavity.
- The windscreen, based on the high transmission coefficient of infrasound through matter, is made of a material having a low acoustic impedance and has a sufficiently thick wall to ensure structural stability.
- Critical variables affecting this acoustic impedance include : chimney length ( hole between lip-plate and head tube ), chimney diameter, and radiuses or curvature of the ends of the chimney.
- This is the intermediate situation, that occurs during sediment compaction with depth, between the acoustic impedance relationship required for a bright spot and the acoustic impedance relationship required for a dim spot.
- This is the intermediate situation, that occurs during sediment compaction with depth, between the acoustic impedance relationship required for a bright spot and the acoustic impedance relationship required for a dim spot.
- A hydrophone can " listen " to sound in air but will be less sensitive due to its design as having a good acoustic impedance match to water, which is a denser fluid than air.
- The sensitivity of these devices continues to improve; a newly developed piezoelectric transducer can produce frequencies in the MHz that can easily propagate through even high acoustic impedance materials such as steel and dense ceramics.
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