Ullmann D
Sudhoffs Arch. 2000;84(1):89-94.
Reports of cases of extremely wide-ranging sound propagation can be traced to the 17th century. It was noticed that a "zone of silence" exists between the zone of direct audibility near the source of the sound and a zone more than 150 km distant from it, where the sound can be heard again. Numerous scientists offered explanations for this astonishing phenomenon; it turned out that the solution of the problem required an interdisciplinary approach. In this paper, the author describes the path of arguments leading to the explanation accepted nowadays.
关于声音传播范围极广的案例报告可以追溯到17世纪。人们注意到，在靠近声源的直接可听区域与距离声源超过150公里的区域之间存在一个“寂静区”，在这个区域之外声音又能被听到。许多科学家对这一惊人现象提出了解释；结果发现，解决这个问题需要跨学科的方法。在本文中，作者描述了得出如今被接受的解释的论证过程。
