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  2. Centennial Light - Wikipedia

    en.wikipedia.org/wiki/Centennial_Light

    On the evening of May 20, 2013, the general public witnessed, through a dedicated webcam, that the bulb had apparently burned out. The next morning, an electrician was called in to confirm its status. It was determined that the bulb had not burned out when the dedicated power supply was bypassed, using an extension cord. The power supply was ...

  3. Longest-lasting light bulbs - Wikipedia

    en.wikipedia.org/wiki/Longest-lasting_light_bulbs

    The world's longest-lasting light bulb is the Centennial Light located at 4550 East Avenue, Livermore, California. It is maintained by the Livermore-Pleasanton Fire Department . The fire department claims that the bulb is at least 124 years old (installed 1901) and has only been turned off a handful of times.

  4. Incandescent light bulb - Wikipedia

    en.wikipedia.org/wiki/Incandescent_light_bulb

    Light output is approximately proportional to V 3.4; Power consumption is approximately proportional to V 1.6; Lifetime is approximately proportional to V −16; Color temperature is approximately proportional to V 0.42 [115] A 5% reduction in voltage will double the life of the bulb, but reduce its light output by about 16%.

  5. Palace Theater Light - Wikipedia

    en.wikipedia.org/wiki/Palace_Theater_Light

    The light survived when the opera house became the Palace Theater, and survived several power outages. It was put on its own circuit breaker "that was permanently set to 'on ' ". [ 3 ] The theater house was marked for demolition in 1977, and the light bulb went to the local home of a man.

  6. Let's Grow: Light temperature is important to landscape lighting

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  8. Livermore-Pleasanton Fire Department - Wikipedia

    en.wikipedia.org/wiki/Livermore-Pleasanton_Fire...

    Firehouse Six houses the Centennial Light, the world's longest-lasting light bulb, located at 4550 East Avenue in Livermore. [4] The department says that the bulb is at least 117 years old and has been turned off only a handful of times.

  9. The Light Bulb Conspiracy - Wikipedia

    en.wikipedia.org/wiki/The_Light_Bulb_Conspiracy

    The Centennial Light is considered to be the longest-lasting incandescent lamp in the world. It is used as evidence of collusion among incandescent lamp manufacturers in the Phoebus cartel , one of whose aims was to limit the average lifespan of lightbulbs to 1000 hours.