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2. Eddy-current testing - Wikipedia

   en.wikipedia.org/wiki/Eddy-current_testing

   Eddy current testing (ECT) as a technique for testing finds its roots in electromagnetism. Eddy currents were first observed by François Arago in 1824, but French physicist Léon Foucault is credited with discovering them in 1855. ECT began largely as a result of the English scientist Michael Faraday's discovery of electromagnetic induction in

3. Electrical capacitance tomography - Wikipedia

   en.wikipedia.org/wiki/Electrical_capacitance...

   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 [ 2 ] and is proposed as a method for industrial process monitoring.

4. Test probe - Wikipedia

   en.wikipedia.org/wiki/Test_probe

   A test probe is a physical device used to connect electronic test equipment to a device under test (DUT). Test probes range from very simple, robust devices to ...

5. Tubular NDT - Wikipedia

   en.wikipedia.org/wiki/Tubular_NDT

   Tubular NDT (nondestructive testing) is the application of various technologies to detect anomalies such as corrosion and manufacturing defects in metallic tubes.Tubing can be found in such equipment as boilers and heat exchangers.

6. Capacitance probe - Wikipedia

   en.wikipedia.org/wiki/Capacitance_probe

   The configuration is like the neutron probe where an access tube made of PVC is installed in the soil; probes can also be modular (comb-like) and connected to a logger. The sensing head consists of an oscillator circuit, the frequency is determined by an annular electrode , fringe-effect capacitor , and the dielectric constant of the soil.

7. Microwave power meter - Wikipedia

   en.wikipedia.org/wiki/Microwave_power_meter

   A microwave power meter is an instrument which measures the electrical power at microwave frequencies typically in the range 100 MHz to 40 GHz. Usually a microwave power meter will consist of a measuring head which contains the actual power sensing element, connected via a cable to the meter proper, which displays the power reading.