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  2. Osmium compounds - Wikipedia

    en.wikipedia.org/wiki/Osmium_compounds

    Osmium(I) iodide is a metallic grey solid produced by the reaction of osmium tetroxide and hydroiodic acid heated in a water bath for 48 hours in a carbon dioxide atmosphere. It is an amorphous compound. [34] Osmium(II) iodide is a black solid [35] produced by the reaction of osmium tetroxide and hydroiodic acid at 250 °C in nitrogen: [34]

  3. Osmium - Wikipedia

    en.wikipedia.org/wiki/Osmium

    Osmium (from Ancient Greek ὀσμή (osmḗ) 'smell') is a chemical element; it has symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element.

  4. Test light - Wikipedia

    en.wikipedia.org/wiki/Test_light

    A test light, test lamp, voltage tester, or mains tester is a piece of electronic test equipment used to determine the presence of electricity in a piece of equipment under test. A test light is simpler and less costly than a measuring instrument such as a multimeter , and often suffices for checking for the presence of voltage on a conductor.

  5. Transformer oil testing - Wikipedia

    en.wikipedia.org/wiki/Transformer_oil_testing

    The transformer oil testing device measures and reports the root mean square value of the breakdown voltage. After the transformer oil test is completed, the insulation oil is stirred automatically and the test sequence is performed repeatedly: typically 5 repetitions, depending on the standard.

  6. Air flow meter - Wikipedia

    en.wikipedia.org/wiki/Air_flow_meter

    An air flow meter is a device similar to an anemometer that measures air flow, i.e. how much air is flowing through a tube. It does not measure the volume of the air passing through the tube, it measures the mass of air flowing through the device per unit time, though Thus air flow meters are simply an application of mass flow meters for the ...

  7. Osmium(II) chloride - Wikipedia

    en.wikipedia.org/wiki/Osmium(II)_chloride

    Osmium(II) chloride or osmium ... Osmium(II) chloride does not react with hydrochloric acid and sulfuric acid. It reacts with CO at 220 °C: OsCl 2 + 3CO → Os(CO) 3 ...

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    mail.aol.com

    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!

  9. 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 ...

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