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  2. Charge density wave - Wikipedia

    en.wikipedia.org/wiki/Charge_density_wave

    The CDW in electronic charge is accompanied by a periodic distortion – essentially a superlattice – of the atomic lattice. [1] [2] [3] The metallic crystals look like thin shiny ribbons (e.g., quasi-1-D NbSe 3 crystals) or shiny flat sheets (e.g., quasi-2-D, 1T-TaS 2 crystals). The CDW's existence was first predicted in the 1930s by Rudolf ...

  3. Tube Products of India - Wikipedia

    en.wikipedia.org/wiki/Tube_Products_of_India

    Tube Investments of India is a flagship company of Murugappa Group.Tube Products of India was established in collaboration with Tube Products (Old Bury) Limited, UK to produce Electric resistance welding (ERW) and Cold Drawn Welded (CDW) tubes also called as Drawn Over Mandrel tubes.

  4. Spin density wave - Wikipedia

    en.wikipedia.org/wiki/Spin_density_wave

    Spin-density wave (SDW) and charge-density wave (CDW) are names for two similar low-energy ordered states of solids. Both these states occur at low temperature in anisotropic , low-dimensional materials or in metals that have high densities of states at the Fermi level N ( E F ) {\displaystyle N(E_{F})} .

  5. CDW - Wikipedia

    en.wikipedia.org/wiki/CDW

    CDW Corporation is an American technology company headquartered in Vernon Hills, Illinois that provides technology products and services for business, government and education. The company has a secondary division known as CDW-G , devoted solely to United States governmental entities, such as K-12 schools, universities, non-profit healthcare ...

  6. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics.

  7. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

  8. How Democrats Are Faring In First Tests Of The Trump Backlash

    data.huffingtonpost.com/2017/special-elections

    Special Election: Election Date: California Congressional District 34 (Runoff) June 6, 2017: Tennessee House of Representatives District 95: June 15, 2017

  9. Circumpolar deep water - Wikipedia

    en.wikipedia.org/wiki/Circumpolar_deep_water

    Circumpolar Deep Water (CDW) is a designation given to the water mass in the Pacific and Indian oceans that is a mixing of other water masses in the region. [1] It is characteristically warmer and saltier than the surrounding water masses, causing CDW to contribute to the melting of ice shelves in the Antarctic region.