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  2. 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.

  3. 5-inch/38-caliber gun - Wikipedia

    en.wikipedia.org/wiki/5-inch/38-caliber_gun

    The Mark 12 5"/38-caliber gun was a United States dual-purpose naval gun, but also installed in single-purpose mounts on a handful of ships.The 38-caliber barrel was a mid-length compromise between the previous United States standard 5"/51 low-angle gun and 5"/25 anti-aircraft gun.

  4. 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 ...

  5. 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.

  6. List of Mullard–Philips vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_Mullard–Philips...

    This is a list of European Mullard–Philips vacuum tubes and their American equivalents. Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme.

  7. 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})} .

  8. Syrian Christians attend services, schools reopen a week ...

    www.aol.com/news/syrian-authorities-reopen...

    DAMASCUS/LATAKIA, Syria (Reuters) -Syrian Christians attended regular Sunday services for the first time since the dramatic overthrow of President Bashar al-Assad a week ago, in an early test of ...

  9. List of naval guns by caliber - Wikipedia

    en.wikipedia.org/wiki/List_of_naval_guns_by_caliber

    37 mm (1.5 in) 3.7 cm FlaK 36 Nazi Germany: World War II 37 mm (1.5 in) 37-mm air-defense gun M1939 (61-K) Soviet Union: World War II - Cold War 37 mm (1.5 in) 37 mm kan M/98 (Finspång 37 mm naval gun L/35 model 1898) Sweden-Norway: 1890s - Cold War 37 mm (1.5 in) 37 mm kan M/98B (Finspång 37 mm naval gun L/39 model 1901) Sweden-Norway