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  2. Ionometer - Wikipedia

    en.wikipedia.org/wiki/Ionometer

    The term ionometer was originally applied to a device for measuring the intensity of ionising radiation.Examples of radiation detectors described as ionometers can be found through to the 1950s but the term more often now means a device for measuring the chemical ion concentration of a fluid.

  3. John F. Rider - Wikipedia

    en.wikipedia.org/wiki/John_F._Rider

    John Francis Rider (1900–1985) was an American radio engineer best known as publisher and author of over 125 books for radio and television servicing. He founded John F. Rider Publisher Inc. and was responsible for annual volumes of the Perpetual Troubleshooter's Manual from 1931 to 1954.

  4. pH meter - Wikipedia

    en.wikipedia.org/wiki/PH_meter

    [25]: 131–135 In its first full year of sales, 1936, the company sold 444 pH meters for $60,000 in sales. [26] In years to come, the company sold millions of the units. [ 27 ] [ 28 ] In 2004 the Beckman pH meter was designated an ACS National Historic Chemical Landmark in recognition of its significance as the first commercially successful ...

  5. Ionization chamber - Wikipedia

    en.wikipedia.org/wiki/Ionization_chamber

    Hand-held integral ion chamber survey meter in use View of sliding beta shield on integral hand held instrument. Ion chambers are widely used in hand held radiation survey meters to measure beta and gamma radiation. They are particularly preferred for high dose rate measurements and for gamma radiation they give good accuracy for energies above ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Ion-selective electrode - Wikipedia

    en.wikipedia.org/wiki/Ion-selective_electrode

    An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a simple membrane-based potentiometric device which measures the activity of ions in solution. [1] It is a transducer (or sensor ) that converts the change in the concentration of a specific ion dissolved in a solution into an electrical potential .

  8. Survey meter - Wikipedia

    en.wikipedia.org/wiki/Survey_meter

    Survey meters in radiation protection are hand-held ionising radiation measurement instruments used to check such as personnel, equipment and the environment for radioactive contamination and ambient radiation. The hand-held survey meter is probably the most familiar radiation measuring device owing to its wide and visible use.

  9. Electrical engineering - Wikipedia

    en.wikipedia.org/wiki/Electrical_engineering

    Power engineers may work on the design and maintenance of the power grid as well as the power systems that connect to it. [60] Such systems are called on-grid power systems and may supply the grid with additional power, draw power from the grid, or do both.

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