# Tensile strength and the mining of black holes.

@article{Brown2013TensileSA, title={Tensile strength and the mining of black holes.}, author={Adam R. Brown}, journal={Physical review letters}, year={2013}, volume={111 21}, pages={ 211301 } }

There are a number of important thought experiments that involve raising and lowering boxes full of radiation in the vicinity of black hole horizons. This Letter looks at the limitations placed on these thought experiments by the null energy condition, which imposes a fundamental bound on the tensile-strength-to-weight ratio of the materials involved, makes it impossible to build a box near the horizon that is wider than a single wavelength of the Hawking quanta, and puts a severe constraint on…

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