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  2. History of traffic lights - Wikipedia

    en.wikipedia.org/wiki/History_of_traffic_lights

    The words "Stop" and "Go" were in white on a green background and the lights had red and green lenses illuminated by kerosene lamps for night travellers and the arms were 8 feet (2.4 m) above ground. [3]: 22 It was controlled by a traffic officer who would blow a whistle before changing the commands on this signal to help alert travellers of ...

  3. Hydrangea macrophylla - Wikipedia

    en.wikipedia.org/wiki/Hydrangea_macrophylla

    Hydrangea macrophylla is a species of flowering plant in the family Hydrangeaceae, native to Japan. It is a deciduous shrub growing to 2 m (7 ft) tall by 2.5 m (8 ft) broad with large heads of pink or blue flowers in summer and autumn. [2] Common names include bigleaf hydrangea, French hydrangea, lacecap hydrangea, mophead hydrangea, and ...

  4. Frame - Wikipedia

    en.wikipedia.org/wiki/Frame

    A frame is often a structural system that supports other components of a physical construction and/or steel frame that limits the construction's extent.

  5. City Lights - Wikipedia

    en.wikipedia.org/wiki/City_Lights

    City Lights marked the first time Chaplin composed the film score to one of his productions and it was written in six weeks with Arthur Johnston. The main theme, used as a leitmotif for the blind flower girl, is the song "La Violetera" ("Who'll Buy my Violets") from Spanish composer José Padilla. Chaplin lost a lawsuit to Padilla for not ...

  6. AOL Mail

    mail.aol.com/?icid=aol.com-nav

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Non-inertial reference frame - Wikipedia

    en.wikipedia.org/wiki/Non-inertial_reference_frame

    A non-inertial reference frame (also known as an accelerated reference frame [1]) is a frame of reference that undergoes acceleration with respect to an inertial frame. [2] An accelerometer at rest in a non-inertial frame will, in general, detect a non-zero acceleration. While the laws of motion are the same in all inertial frames, in non ...

  8. Neon lighting - Wikipedia

    en.wikipedia.org/wiki/Neon_lighting

    [11] [19] [20] The outer diameters for the glass tubing used in neon lighting ranges from 9 to 25 mm; with standard electrical equipment, the tubes can be as long as 30 metres (98 ft). [21] The pressure of the gas inside ranges from 3 to 20 Torr (0.43 kPa), which corresponds to a

  9. Advent wreath - Wikipedia

    en.wikipedia.org/wiki/Advent_wreath

    Advent wreath with a Christ candle in the center. The Advent wreath, or Advent crown, is a Christian tradition that symbolizes the passage of the four weeks of Advent in the liturgical calendar of the Western church. It is traditionally a Lutheran practice, although it has spread to many other Christian denominations. [1] [2] [3]