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  2. Gas tungsten arc welding - Wikipedia

    en.wikipedia.org/wiki/Gas_tungsten_arc_welding

    Gas tungsten arc welding (GTAW, also known as tungsten inert gas welding or TIG, and heliarc welding when helium is used) is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area and electrode are protected from oxidation or other atmospheric contamination by an inert shielding gas (argon or ...

  3. Lanthanide - Wikipedia

    en.wikipedia.org/wiki/Lanthanide

    The colors of the γ-sesquisulfides are La 2 S 3, white/yellow; Ce 2 S 3, dark red; Pr 2 S 3, green; Nd 2 S 3, light green; Gd 2 S 3, sand; Tb 2 S 3, light yellow and Dy 2 S 3, orange. [60] The shade of γ-Ce 2 S 3 can be varied by doping with Na or Ca with hues ranging from dark red to yellow, [ 49 ] [ 60 ] and Ce 2 S 3 based pigments are used ...

  4. Polarization (electrochemistry) - Wikipedia

    en.wikipedia.org/wiki/Polarization...

    In electrochemistry, polarization is a collective term for certain mechanical side-effects (of an electrochemical process) by which isolating barriers develop at the interface between electrode and electrolyte. These side-effects influence the reaction mechanisms, as well as the chemical kinetics of corrosion and metal deposition.

  5. Heisman Trophy: Full list of winners for college football’s ...

    www.aol.com/heisman-trophy-full-list-winners...

    The 2024 Heisman Trophy will be awarded on Saturday. Here is a list of past winners for college football's top award, sorted by school.

  6. Electron-beam welding - Wikipedia

    en.wikipedia.org/wiki/Electron-beam_welding

    The accelerating voltage ranges from 30–200 kV, typically 60–150 kV. Technical challenges and equipment costs are an increasing function of the operating voltage. The high-voltage equipment must also supply low voltage current, above 5 V, for the cathode heating, and negative voltage up to about 1000 V for the control electrode.

  7. 10 Things You Should Never Pay For - AOL

    www.aol.com/10-things-never-pay-140000055.html

    6. Bottled Water. While it might seem like a stretch to call the entire bottled water industry a scam … it kinda is. Most bottled water companies simply take municipal water and filter it for ...

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