A 50-year-old theory that began as speculation about how an alien civilization could use a black hole to generate energy has been experimentally verified for the first time in a Glasgow research lab
Por: University of Glasgow, Phys.org. Acesse aqui a matéria original.
In 1969, British physicist Roger Penrose suggested that energy could be generated by lowering an object into the black hole's ergosphere (...). Penrose predicted that the object would acquire a negative energy in this unusual area of space. By dropping the object and splitting it in two so that one half falls into the black hole while the other is recovered, the recoil action would measure a loss of negative energy—effectively, the recovered half would gain energy extracted from the black hole's rotation. (...) Now, researchers from the University of Glasgow's School of Physics and Astronomy have finally found a way to experimentally demonstrate the effect that Penrose and Zel'dovich proposed by twisting sound instead of light. Saiba mais...
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