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The idea sounds very interesting but I really wonder how efficient it would be and how durable it would be. Could work for a purpose built storage solution but using it in something like a house seems like a stretch.

Archive: https://archive.today/XlZ6b

From the post:

>On a laboratory bench in Cambridge, Massachusetts, a stack of polished cylinders of black-coloured concrete sit bathed in liquid and entwined in cables. To a casual observer, they aren't doing much. But then Damian Stefaniuk flicks a switch. The blocks of human-made rock are wired up to an LED – and the bulb flickers into life. "At first I didn't believe it," says Stefaniuk, describing the first time the LED lit up. "I thought that I hadn't disconnected the external power source, and that was why the LED was on.

The idea sounds very interesting but I really wonder how efficient it would be and how durable it would be. Could work for a purpose built storage solution but using it in something like a house seems like a stretch. Archive: https://archive.today/XlZ6b From the post: >>On a laboratory bench in Cambridge, Massachusetts, a stack of polished cylinders of black-coloured concrete sit bathed in liquid and entwined in cables. To a casual observer, they aren't doing much. But then Damian Stefaniuk flicks a switch. The blocks of human-made rock are wired up to an LED – and the bulb flickers into life. "At first I didn't believe it," says Stefaniuk, describing the first time the LED lit up. "I thought that I hadn't disconnected the external power source, and that was why the LED was on.

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