
Review of Short Phrases and Links 
This Review contains major "Electrical Impedance" related terms, short phrases and links grouped together in the form of Encyclopedia article.
 As usual for any electrical impedance, the ratio is defined only for the frequency domain and never in the time domain.
 A measuring device measures the electrical impedance at one or more frequencies between the electrodes.
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 Thus, for instance the electrical impedance of fat is much higher than the impedance of muscle tissue or fluids flowing in arteries and veins.
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 Acoustic impedance, being a complex quantity, can have real and imaginary components analogous to those in an electrical impedance.
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Electrical Impedance
 Electrical impedance, (sometimes Electric impedance) or simply impedance, is a measure of opposition to a sinusoidal electric current.
 The ohm (symbol: Ω) is the SI unit of electrical impedance or, in the direct current case, electrical resistance, named after Georg Ohm.
 The electrodes sense a change in blood volume (increased blood volume decreases electrical impedance) in the calf veins, which is recorded on a strip chart.
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Categories
 Acoustic Impedance
 Calf Veins
 Physics > Physicists > German Physicists > Georg Ohm
 Anatomy > Tissues > Blood > Blood Volume
 Measuring Device

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