At least 110 years old the Centennial Light is the world’s longest-lasting light bulb. Located at 4550 East Avenue, Livermore, California, the four watt, hand-blown, carbon filament, common light bulb manufactured by the Shelby Electric Company in the late 1890s, is often cited as evidence for the existence of ‘planned obsolescence’ (designing a product so it will no longer function after a certain period of time) in later-produced light bulbs. It even has a fan club with thousands of members and its own website.
The Chand Baori (Stepwell) is one of the oldest, deepest and largest stepwells in Rajasthan (India). It was built by King Chanda of Nikumbha Dynasty in Abhaneri village of Rajasthan in the 8th-9th century AD. The design and structure of the Stepwell aimed at conserving as much water as possible in the extremely arid state of Rajasthan.
The structure is like a upside-down pyramid with three flight of stairs descending into the earth. The fourth side has a subterranean palace. The flight of stairs and the palace are arranged in a square pattern with the well lying at the bottom. The Stepwell was used as a community gathering place for locals during periods of intense heat as the air remained cooler by 5-6 degrees centigrade at the bottom of the well.
Credit : HubPages
Picture Credit : Google
