Worlds Longest Burning Lightbulb
Age: 104 years and counting (as of 2005)
Installed: First installed at the fire department hose cart house in 1901. Then moved to fire station at First and McLeod, then to its present site in 1976 at the fire station, 4550 East Ave., Livermore, California
Proof of Longevity: From local newspaper records; also GE engineers researched it. Was donated to the Fire Department in 1901 by Dennis Bernal who owned the Livermore Power and Light Co.
Vital Statistics: Made by the Shelby Electric Company, a handblown bulb with carbon filament. Approximate wattage-4 watts. Left burning continuously in firehouse as a nightlight over the fire trucks.
More about it here.
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So why can’t all bulbs burn that long?