An elegant experiment showing that acoustic waves are amplified after scattering by a rotating body demonstrates an effect predicted in 1971 by Yakov Zel’dovich. This result has implications for the understanding of scattering from black holes.

中文翻译：

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声学黑洞

优美的实验表明，声波在旋转体散射后会放大，这证明了Yakov Zel'dovich在1971年预测的效果。这个结果对理解黑洞的散射有影响。