Search results

Jump to navigation Jump to search
View (previous 20 | ) (20 | 50 | 100 | 250 | 500)
  • ...olts in a full scale 100 volt reading.<ref>''Pocket Handbook on Electrical Measurements'', Siemens, AG, 1966, p.29</ref> ...al impedance. Thus the measured parameters are somewhat altered during the measurements. ...
    2 KB (384 words) - 15:45, 6 September 2023
  • ...st for making this measurement but either require accurate measurements of impedance or are inaccurate. == Measurements == ...
    3 KB (555 words) - 02:37, 21 September 2024
  • ...edance of free space]].<ref>{{Cite web |title=CODATA Value: characteristic impedance of vacuum |url=https://physics.nist.gov/cgi-bin/cuu/Value?z0 |access-date=2 ...rd height. A value of standard height frequently employed for VHF and UHF measurements is {{convert|10|m}}. Gain correction tables may be provided with the meter ...
    3 KB (514 words) - 02:15, 20 November 2024
  • * Electrical cardiometry is similar to [[impedance cardiography]] in the fact that both methods measure thoracic electrical bi ...ce due to the [[respiratory]] cycle, and ΔZ<sub>C</sub> are the changes of impedance due to the [[cardiac]] cycle. ΔZ<sub>R</sub> is considered an artifact aki ...
    8 KB (1,306 words) - 18:32, 26 April 2024
  • ....c.]] It can be designed to work in terms of either [[Electrical impedance|impedance]] or [[admittance]]. It can be used on resistors, capacitors and inductors, ...of these various options offer great flexibility of construction, allowing measurements over a wide range of values while using only a small number of standards – ...
    10 KB (1,586 words) - 08:47, 19 May 2024
  • ...sideration. Since the voltmeter is ideally assumed to have nearly infinite impedance, the currents in branches '''ab''' and '''bc''' and those in the branches ' [[Category:Impedance measurements]] ...
    4 KB (630 words) - 03:16, 23 December 2023
  • {{Short description|Validation of Impedance Spectra}} ...to the [[Kramers–Kronig relations]], in the Z-HIT the [[Complex impedance|impedance modulus]] is computed from the [[Phase (waves)|course of the phase angle]] ...
    19 KB (2,769 words) - 16:13, 20 October 2024
  • ...ath>, and the acoustical transfer impedance equals the electrical transfer impedance. ...ir-wise combinations <math>ik</math> and <math>jk</math>. The set of three measurements then allows the individual microphone transmission factor to be deduced by ...
    10 KB (1,451 words) - 08:47, 12 April 2024
  • ...and Cady.<ref>{{cite book|last1=Cady|first1=P.|title=Progress in impedance measurements in microbiology|date=1978|publisher=Chapter 14 in “Mechanizing microbiology ...zi|first2=M.E.|last3=Vercellone|first3=M.I.|last4=Madrid|first4=R.E.|title=Impedance bacteriometry: medium and interface contributions during bacterial growth|j ...
    17 KB (2,549 words) - 23:46, 27 January 2025
  • ...nts. Resistivity strongly affects [[corrosion]] rates and electrochemical measurements require an electrical connection to the rebar. It is convenient to make a * [[Impedance spectroscopy]] ...
    9 KB (1,270 words) - 08:32, 3 August 2024
  • {{Short description|Device used for microwave measurements}} '''Slotted lines''' are used for [[microwave]] measurements and consist of a movable probe inserted into a slot in a [[transmission lin ...
    20 KB (3,095 words) - 15:25, 17 March 2023
  • {{Sound measurements}} ...nt of the incident wave in a standing wave acoustic field requires uses of impedance tube technology, may be quite laborious, unless one makes use of the two-mi ...
    9 KB (1,493 words) - 23:48, 19 May 2024
  • ...he line is not [[Electrical termination|terminated]] in its characteristic impedance. This can happen, for instance, if two lengths of dissimilar transmission l ...s as [[stub (electronics)|stubs]] and [[quarter wave impedance transformer|impedance transformers]]. The special cases of open circuit and short circuit lines ...
    24 KB (3,925 words) - 16:32, 10 October 2024
  • ...ariables in the various domains analogous. It fills the same role as the [[impedance analogy]] for the mechanical domain. ...to complex geometry. It may be computed from other considerations such as measurements or specifications. ...
    22 KB (3,328 words) - 17:49, 22 February 2025
  • ...ion (stratigraphy)|formation]] and fluid [[Density|densities]], [[acoustic impedance]], [[Poisson's ratio]], formation compressibility, shear rigidity, [[porosi ...t for clarity, these variables will be referred to as the [[Wave impedance|impedance]] series of the earth model. In the following subsections we will describe ...
    25 KB (3,877 words) - 20:00, 27 December 2024
  • ...thickness of the grid, the real part of the surface [[electrical impedance|impedance]] of the metal is <math>\rho = 1/\delta \sigma</math> where <math>\sigma</m Given the average surface current and the surface impedance, we could calculate the power dissipated as <math>P_D = 2\rho \bar{J}^2</ma ...
    24 KB (3,618 words) - 07:27, 12 July 2024
  • ...adiation efficiency is less easy to calculate and is usually determined by measurements. ...ances of UWB Wheeler Cap and Reverberation Chamber to Carry Out Efficiency Measurements of Narrowband Antennas |url=https://ieeexplore.ieee.org/document/4627444 |j ...
    9 KB (1,395 words) - 02:49, 16 December 2024
  • [[Category:Impedance measurements]] ...
    5 KB (791 words) - 23:39, 14 January 2024
  • ...=Richard R. |last4=Hyde |first4=James S. |volume=282}}</ref> and precision measurements of electromagnetic material properties ([[permittivity]] and [[permeability ...uency <math>f_0</math> and quality factor <math>Q</math> of the resonance. Measurements of the changes in <math>f_0</math> and <math>Q</math> can be used to fully ...
    32 KB (4,864 words) - 00:43, 29 November 2024
  • ...of arterial waves that give rise to [[arterial blood pressure]], based on measurements of pressure, P, and velocity, U, waveforms ('''Figure 1'''). Wave intensity ...im H. |date=2009 |title=Forward and backward waves in the arterial system: Impedance or wave intensity analysis? |journal=Med Biol Eng Comput |volume=47 |issue= ...
    15 KB (2,258 words) - 00:47, 30 December 2024
View (previous 20 | ) (20 | 50 | 100 | 250 | 500)