The Longest Burning Light Bulb

In Livermore, California, there is a small pear-shaped light bulb that has been burning continuously for 113 years. Installed in 1901, this light bulb holds the record for being the longest continuously burning bulb in the world. Originally built by Adolf Schalet, it was donated to the town's volunteer fire department and served the purpose of providing light for firefighters' equipment in the dark nights before fire engines. The bulb survived several relocations, became a point of pride for the community, and even had its own 100th birthday party in 2001. The secret behind the bulb's longevity remains a mystery, but tests have revealed that its filament is thicker and made of carbon, suggesting it was made to be a quality product rather than one with planned obsolescence.