The 110-year-old Centennial Lightbulb. CREDIT: Dick Jones

An incandescent light bulb recognized by Guinness World Records as being the longest burning is still glowing strong days after celebrations that marked its 110th anniversary.

The Centennial Light Bulb, at Fire Station No. 6 in Livermore, Calif., has been burning bright since it was first installed in 1901. (The exact date appears unknown, though the bulb’s “birthday” is typically held in June, most recently June 18th.) Since then, the 60-watt bulb has been alight 24 hours a day, operating at about 4 watts, to provide night illumination of the fire engines.

Other than a few power outages, there has only been one break in its operation, when it was removed from one fire station and fitted in another in 1976. The cord was severed out of fear that unscrewing the bulb would break it, and it was moved with a full police and fire truck escort, under the watch of Capt. Kirby Slate. It got but 22 minutes of rest during the ordeal.

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