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  2. Light tube - Wikipedia

    en.wikipedia.org/wiki/Light_tube

    Total external reflection, hollow light tube Total internal reflection, block of acrylic. Light tubes (also known as solar pipes, tubular skylights or sun tunnels [1]) are structures that transmit or distribute natural or artificial light for the purpose of illumination and are examples of optical waveguides.

  3. Light tube (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Light_tube_(disambiguation)

    A light tube is used for transporting natural or artificial light for illumination.. Light tube or light pipe may also refer to: . Waveguide (optics), a device for light transport in photonic devices

  4. List of websites blocked in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/List_of_websites_blocked...

    9 December 2008 (Unblocked by IWF) Wayback Machine: archive.org Web archive: Site incompatibility with Cleanfeed: Internet Watch Foundation [26] 14 January 2009: 16 January 2009 [27] FileServe: fileserve.com File hosting: Mistake Internet Watch Foundation [28] 16 November 2011 [29] 18 November 2011: NewzBin2 [30] newzbin.com later newzbin.es ...

  5. Cold cathode - Wikipedia

    en.wikipedia.org/wiki/Cold_cathode

    Cold-cathode lamps include cold-cathode fluorescent lamps (CCFLs) and neon lamps.Neon lamps primarily rely on excitation of gas molecules to emit light; CCFLs use a discharge in mercury vapor to develop ultraviolet light, which in turn causes a fluorescent coating on the inside of the lamp to emit visible light.

  6. Category:Child pornography websites - Wikipedia

    en.wikipedia.org/wiki/Category:Child_pornography...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  7. LED tube - Wikipedia

    en.wikipedia.org/wiki/LED_tube

    LED tubes. LED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life.

  8. Play Poker Texas Holdem Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/poker...

    Poker: Texas Hold'em (No Limit) Play two face down cards and the five community cards. Bet any amount or go all-in. By Masque Publishing

  9. Phototube - Wikipedia

    en.wikipedia.org/wiki/Phototube

    Two different types of phototubes. A phototube or photoelectric cell is a type of gas-filled or vacuum tube that is sensitive to light. Such a tube is more correctly called a 'photoemissive cell' to distinguish it from photovoltaic or photoconductive cells.