The Mysterious Case Of A Very Old Light Bulb

The average light bulb has a lifespan of approximately 1,000 to 2,000 hours, while increasingly popular LED bulbs last between 25,000 and 50,000 hours. However, this story is about an unusual phenomenon of a light bulb on a firehouse ceiling in California that's burned for over 1,000,000 hours! That's more than 115 years. Just wow!Show more

Since it was first installed in 1901, there were only a few rare cases when it has been turned off. Having outlived all of the firefighters from that time, it was called the “Eternal Light” by many physicists around the world. Now this bulb is commonly called the Centennial Light, and even though it raised many questions for decades, its longevity is still a real mystery.

Fast forward several decades later, in 1972, a fire Marshall in Livermore, California told a local newspaper about a strange situation – there was a light bulb hanging from the ceiling of his station that has been burning for many years. This phenomenon was already a topic for conversation in the firehouse for long, but nobody could say with certainty how long it's been burning, nor where it came from. Soon after this, reporters started investigating, and the findings were indeed stunning. One reporter conducted such an extensive research that in the end was able to tell when exactly this bulb was purchased and where!

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