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  2. Waveguide (radio frequency) - Wikipedia

    en.wikipedia.org/wiki/Waveguide_(radio_frequency)

    In radio-frequency engineering and communications engineering, a waveguide is a hollow metal pipe used to carry radio waves. [1] This type of waveguide is used as a transmission line mostly at microwave frequencies, for such purposes as connecting microwave transmitters and receivers to their antennas, in equipment such as microwave ovens, radar sets, satellite communications, and microwave ...

  3. Henrietta Lacks - Wikipedia

    en.wikipedia.org/wiki/Henrietta_Lacks

    Henrietta Lacks (born Loretta Pleasant; August 1, 1920 – October 4, 1951) [2] was an African-American woman [5] whose cancer cells are the source of the HeLa cell line, the first immortalized human cell line [B] and one of the most important cell lines in medical research.

  4. Aspect ratio (image) - Wikipedia

    en.wikipedia.org/wiki/Aspect_ratio_(image)

    Print sizes are usually defined by their portrait dimensions (tall) while equipment aspect ratios are defined by their landscape dimensions (wide, flipped sideways). A good example of this a 4×6 print (6 inch wide by 4 inch tall landscape) perfectly matches the 3:2 aspect ratio of a DSLR/35 mm, since 6/2=3 and 4/2=2.

  5. Benteler International - Wikipedia

    en.wikipedia.org/wiki/Benteler_International

    With this steel tube plants in Rothrist and Bottrop passed into Group ownership. [9] In 2011 there was a major fire in the hot rolling mill of Benteler Steel Tube GmbH in Dinslaken and production had to be stopped for several months. [10] In 2015 Benteler Steel/Tube opened a hot rolling mill in Shreveport, Louisiana. [11] [12]

  6. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    Errata: The numbered references in the NSRDS-NBS-8 pdf are found near the end of the TPRC Data Book Volume 2 and not somewhere in Volume 3 like it says. [32] Aluminium oxide, porous 22% Porosity 2.3 [45] Constant 1000-1773 [45] This is number 54 on pages 73 and 76. Shakhtin, D.M. and Vishnevskii, I.I., 1957, interval 893-1773 Kelvins. [45 ...

  7. Wesley Pipes - Wikipedia

    en.wikipedia.org/wiki/Wesley_Pipes

    Pipes entered the adult film industry in 1998. [1] His stage name is a reference to actor Wesley Snipes. [2] In 2009, he was inducted into the Urban X Awards Hall of Fame. [3] ...

  8. Orifice plate - Wikipedia

    en.wikipedia.org/wiki/Orifice_plate

    Orifice plate showing vena contracta. An orifice plate is a thin plate with a hole in it, which is usually placed in a pipe. When a fluid (whether liquid or gaseous) passes through the orifice, its pressure builds up slightly upstream of the orifice [1] but as the fluid is forced to converge to pass through the hole, the velocity increases and the fluid pressure decreases.

  9. Statewide opinion polling for the 2016 United States ...

    en.wikipedia.org/wiki/Statewide_opinion_polling...

    Leading presidential 2016 candidate by electoral vote count. States in gray have no polling data. Polls from lightly shaded states are older than September 1, 2016.