Electrical capacitance tomography (ECT) is a method for determination of the dielectric permittivity distribution in the interior of an object from external capacitance measurements. It is a close relative of electrical impedance tomography and is proposed as a method for industrial process monitoring. Although capacitance sensing methods were in widespread use the idea of using capacitance measurement to form images is attributed to and co-workers at UMIST in the 1980s. Although usually called tomography, the technique differs from conventional tomographic methods, in which high resolution images are formed of slices of a material. The measurement electrodes, which are metallic plates, must be sufficiently large to give a measureable change in capacitance. This means that very few electrodes are used, typically eight to sixteen electrodes. An N-electrode system can only provide N(N−1)/2 independent measurements. This means that the technique is limited to producing very low resolution images of approximate slices. However, ECT is fast, and relatively inexpensive. (Wikipedia).
Electricity Chapter 5_3 Capacitance.mov
Video 3 on on electrical capacitance and capacitors.
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Finding the Capacitance of a Parallel Plate capacitor
In this video, I show how to calculate the capacitance of a parallel-plate capacitor, along with giving some examples of real-world parallel plate capacitors. To support the creation of videos like these, get early access, access to a community, behind-the scenes and more, join me on pat
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This video describes how to graphically determine the capacitance of a capacitor. First, five data points are collected, each data point consists of the potential difference across the capacitor and the charge on the plates of the capacitor. Next the data points are plotted on a graph of
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Quantum Transport, Lecture 18: Coupled Qubits
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: experiments on two and more coupled flux qubits, transmons, and spin qubits. Quantum Transport course development supported in part by the National Science Foundation under grant DM
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This video explores the science behind capacitors, including what they are, how they work, and how they store electric potential energy in an electric field. The definition of capacitance is given, as well as the units and symbols used to describe it. The video concludes with a demonstrati
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Quantum Transport, Lecture 16: Superconducting qubits
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Advanced Instructional School on Theoretical and Numerical Aspects of Inverse Problems URL: https://www.icts.res.in/program/IP2014 Dates: Monday 16 Jun, 2014 - Saturday 28 Jun, 2014 Description In Inverse Problems the goal is to determine the properties of the interior of an object from
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