Hourglass of constant weight

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In contrast to a still common belief, a steadily flowing hourglass changes its weight in the course of time. We will show that, nevertheless, it is possible to construct hourglasses that do not change their weight.
2 pages, 1 figure

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Soft Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/123032

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0701776
 http://arxiv.org/abs/cond-mat/0701776

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arXiv