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  2. Ultraviolet photoelectron spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_photoelectron...

    UPS in the gas phase, IPREM, Pau, France, Dr. JM Sotiropoulos, CNRS The ultraviolet photoelectron spectroscopy (UPS) was pioneered by Feodor I. Vilesov , a physicist at St. Petersburg (Leningrad) State University in Russia (USSR) in 1961 to study the photoelectron spectra of free molecules in the gas phase.

  3. Tube tester - Wikipedia

    en.wikipedia.org/wiki/Tube_tester

    The tube checker is the second-simplest of all tube testers after filament continuity testing. Tubes are used as a low power rectifier, with all elements other than filament connections connected together as the anode, at a fraction of its normal emission. By mistake referred to sometimes as Emission Tester because they are a crude measure of ...

  4. Selected-ion flow-tube mass spectrometry - Wikipedia

    en.wikipedia.org/wiki/Selected-ion_flow-tube...

    In the selected ion flow tube mass spectrometer, SIFT-MS, ions are generated in a microwave plasma ion source, usually from a mixture of laboratory air and water vapor. . From the formed plasma, a single ionic species is selected using a quadrupole mass filter to act as "precursor ions" (also frequently referred to as primary or reagent ions in SIFT-MS and other processes involving chemical ...

  5. Electrometer - Wikipedia

    en.wikipedia.org/wiki/Electrometer

    Torsion is used to give a measurement more sensitive than repulsion of gold leaves or cork-balls. It consists of a glass cylinder with a glass tube on top. In the axes of the tube is a glass thread, the lower end of this holds a bar of gum lac, with a gilt pith ball at each extremity.

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  7. Stefan tube - Wikipedia

    en.wikipedia.org/wiki/Stefan_tube

    In chemical engineering, a Stefan tube is a device that was devised by Josef Stefan in 1874. [1] It is often used for measuring diffusion coefficients . [ 1 ] [ 2 ] It comprises a vertical tube, over the top of which a gas flows and at the bottom of which is a pool of volatile liquid that is maintained in a constant-temperature bath.

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  9. Ubbelohde viscometer - Wikipedia

    en.wikipedia.org/wiki/Ubbelohde_viscometer

    Ubbelohde viscometer. 1)Filling tube 2)Venting Tube 3)Capillary Tube 4)Feeder Bulb 5)Measuring Bulb 6)Capillary 7)Level Bulb 8)Reservoir A-B)Timing Marks C-D)Max/Min Marks [1] An Ubbelohde type viscometer or suspended-level viscometer is a measuring instrument which uses a capillary based method of measuring viscosity.