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  2. Compact Muon Solenoid - Wikipedia

    en.wikipedia.org/wiki/Compact_Muon_Solenoid

    The CMS detector is built around a huge solenoid magnet. This takes the form of a cylindrical coil of superconducting cable that generates a magnetic field of 4 tesla, about 100 000 times that of the Earth. The magnetic field is confined by a steel 'yoke' that forms the bulk of the detector's weight at 12,500 t.

  3. Metal detector - Wikipedia

    en.wikipedia.org/wiki/Metal_detector

    In civil engineering, special metal detectors (cover meters) are used to locate reinforcement bars inside walls. The most common type of metal detector is a hand-held metal detector or coil-based detectors using oval-shaped disks with built-in copper coils. The search coil works as sensing probe and must be moved over the ground to detect ...

  4. Superconducting nanowire single-photon detector - Wikipedia

    en.wikipedia.org/wiki/Superconducting_nanowire...

    Superconducting nanowire single-photon detector in the DARPA Quantum Network laboratory at BBN, June 2005. The superconducting nanowire single-photon detector (SNSPD or SSPD) is a type of optical and near-infrared single-photon detector based on a current-biased superconducting nanowire. [1]

  5. Electrochemical fatigue crack sensor - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_fatigue...

    An EFS sensor is first applied to the fatigue sensitive location on the bridge or metal structure, and then is injected with an electrolyte, at which point a small voltage is applied. The system subsequently monitors changes in the current response that results from the exposure of fresh steel during crack propagation.

  6. Associative substitution - Wikipedia

    en.wikipedia.org/wiki/Associative_substitution

    The terminology is typically applied to organometallic and coordination complexes, but resembles the Sn2 mechanism in organic chemistry. The opposite pathway is dissociative substitution, being analogous to the Sn1 pathway. Intermediate pathways exist between the pure associative and pure dissociative pathways, these are called interchange ...

  7. Sign in to AOL Desktop Gold and manage your usernames

    help.aol.com/articles/aol-desktop-signing-on

    3. On the Sign On screen, click the small arrow pointing down to bring up a list of all stored usernames. 4. Select the desired username by clicking on it. Click Continue once you selected the username.

  8. Position sensitive device - Wikipedia

    en.wikipedia.org/wiki/Position_sensitive_device

    A position sensitive device and/or position sensitive detector (PSD) is an optical position sensor (OPS) that can measure a position of a light spot in one or two-dimensions on a sensor surface. Principles

  9. Semiconductor detector - Wikipedia

    en.wikipedia.org/wiki/Semiconductor_detector

    A semiconductor detector in ionizing radiation detection physics is a device that uses a semiconductor (usually silicon or germanium) to measure the effect of incident charged particles or photons. Semiconductor detectors find broad application for radiation protection, gamma and X-ray spectrometry, and as particle detectors.

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