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Acoustic impedance is the measurement that indicates how much sound pressure the vibration of molecules at a given frequency is generated. Attenuation refers to the gradual loss in intensity through a medium, such as light and sound in water.
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What is meant by the terms predecessor event and successor event?
predecessor
What is meant by the first two non-zero terms in an binomial expansion?
The first two terms in a binomial expansion that aren't 0
What is meant by perceived value of an item?
An approximate value in terms of Money that is guesstimated.
What does demophile mean?
demophile is a compress terms that meant nothing to the word demophile
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What is the acoustic impedance of silicone?
Siloxanes have velocities around 900m/s and densities in the neighborhood of 1.2g/cc, so that makes their impedances around 1.1 MRayl. If you want to match living tissue you need a higher impedance, so typically metal-oxide fillers are used to increase the density of silicones that are used for transducer lenses. A better question might be, "How high can we push the density of silicone with fillers before the attenuation gets so high that it's useless?" In practical terms, 1.3-1.4 MRayl is all you can get from a filled siloxane rubber if it's for a window application.
How does water affect the travel of radio frequency?
Water affects the travel of radio frequency in terms of attenuation. For example, sea water has high attenuation, causing communication hardly possible.
What does mosaic attenuation mean in medical terms?
Mosaic attenuation describes a certain kind of visual pattern seen on a CAT scan of the lung. It has no diagnostic meaning - it just describes the picture.
What are the main differences between FETs and BJTs in terms of input impedance?
FET has very high input impedanceBJT has very low input impedance
What is the difference between characteristic impedance and intrinsic impedance?
I believe intrinsic impedance is more tied to the medium, thus is defined in terms of magnetic and electric permeability and electrical conductivity, while characteristic impedance is a "wider" look at the impedance. For example, you can calculate the intrinsic impedance of a 18 awg copper wire, or air, or a vacuum. If you wanted to use coax cable with an 18 awg core, you would be looking at the characteristic impedance, not the intrinsic impedance of the copper that will be carrying the waveform.
Where is the acoustic guitar played?
Any guitar without electronic pickups and with a hollow body is considered to be an 'acoustic guitar' Acoustic guitars are best played into a microphone, or played where they can be heard in terms of location. Otherwise Acoustic guitars may be played anywhere.
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Why do you often represent the quality of speakers in terms of its power instead of its impedance?
Because people believe mostly in the power. But power is not quality.
What is meant by STF in terms of insurance?
STF
