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  2. Hydrargyrum medium-arc iodide lamp - Wikipedia

    en.wikipedia.org/wiki/Hydrargyrum_medium-arc...

    With HMI bulbs, color temperature varies significantly with lamp age. A new bulb generally will output at a color temperature close to 15,000 K during its first few hours. As the bulb ages, the color temperature reaches its nominal value of around 5600 K or 6000 K. With age, the arc length becomes larger as more of the electrodes burn away.

  3. Bright Nights (Springfield) - Wikipedia

    en.wikipedia.org/wiki/Bright_Nights_(Springfield)

    A 2003 study estimated that Bright Nights had brought in $7.3 million to the regional economy. [9] The Jurassic World display was added in 2005. [3] [4] Santa's cottage was added in 2006. [4] In 2007 LED light replacement began, which would continue until 2022. [3] [16] [17] The event brought in $8,212 between the 2008 and 2009 seasons. [9]

  4. Intelligent lighting - Wikipedia

    en.wikipedia.org/wiki/Intelligent_lighting

    Auto-yokes" are often promoted as a way to modernize and increase the flexibility of an inventory of lighting fixtures at a reduced cost to replacement with intelligent lights. Generally, moving mirrors are faster at adjusting a lights position than moving head fixtures; however, moving-heads-style fixtures have a far larger total range of ...

  5. History of street lighting in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_street_lighting...

    The earliest street lights in the colonial America were oil lamps burning whale oil from the Greenland or Arctic right whales of the North Atlantic, or from sperm whales of the South Atlantic, South Pacific, and beyond. [1] [3] Lamplighters were responsible for igniting the lamps and maintaining them. [3]

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    mail.aol.com

    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. Oil lamp - Wikipedia

    en.wikipedia.org/wiki/Oil_lamp

    In many houses, the lamp burns all day, but in other homes, it is lit at sundown. The lamp in the home shrine is supposed to be lit before any other lights are turned on at night. A hand-held oil lamp or incense sticks (lit from the lamp) are also used during the Hindu puja ceremony.

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