The tight connection between mass and energy unveiled by Special Relativity, summarized by the iconic formula $E=m{c}^2$, has revolutionized our understanding of nature and even shaped our political world over the past century through its military application. It is certainly one of the most exhaustively-tested and well-known equations of modern science. Although we have become used to its most obvious implication — mass-energy equivalence —, it is surprising that one of its subtle — yet, inevitable — consequences is still a matter of confusion: the so-called {}. Often considered as a peculiar feature of specific systems or as an artifact to avoid paradoxal situations, here we present a {new} relativistic "paradox’’ which exposes the true nature and ubiquity of hidden momentum. We also show that hidden momentum can be forced to reveal itself through observable effects, hopefully putting an end to decades of controversy about its reality.

中文翻译：

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隐藏但真实：相对论的“悖论”揭示了隐藏动量的普遍性

狭义相对论揭示了质量与能量之间的紧密联系，并通过标志性公式进行了总结 $Ë=米C^2$过去一个世纪以来，通过军事应用，彻底改变了我们对自然的理解，甚至塑造了我们的政治世界。它无疑是现代科学中经过最详尽测试和最著名的方程式之一。尽管我们已经习惯了其最明显的含意-质量-能量当量-但令人惊讶的是，其微妙的，但不可避免的后果之一仍然是一个混乱的问题：所谓的{}。通常被认为是特定系统的特殊功能，或者是避免悖论情况的人工产物，在这里，我们提出了一个{new}相对论的“悖论”，它揭示了隐藏动量的真实本质和普遍性，还表明隐藏动量可以被强迫通过可观察到的效果来展现自己，希望终结有关其现实的数十年争议。