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Geiger counter

//ˈɡaɪɡə ˈkaʊntə// noun

Definitions

Noun
  1. 1
    A device designed to detect radioactivity and measure its intensity.

    "Figure 27 shows a Geiger counter, used to detect ionizing radiation. The counter consists of a thin central wire, carrying a positive charge, surrounded by a concentric circular conducting cylinder, carrying an equal negative charge."

  2. 2
    counter tube that detects ionizing radiations wordnet
  3. 3
    a feature of an RFID reader that emits a sound indicating the signal strength of an RFID tag that is being searched for. broadly

    "Any Geiger Counter feature can direct a user towards an RFID tagged item or at least point the user in the right direction, depending on how far away the RFID tag is."

Etymology

Named after Hans Geiger who developed the first such device in 1908 together with Ernest Rutherford.

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