在第二次世界大战后期,美国飞行员在海上飞行时每人都被要求携带一些小金属球,如果在飞机不幸被击落时跳伞,落到大海上,穿着救生衣无助地四处飘荡,就要扔一颗金属球到海里。起初,这些美国大兵也不明白为什么要这么做。日本、德国军方俘获这些小球后发现里面只有空气,他们对于这种“秘密武器”也大惑不解。其实这个秘密和美国著名的地质学家和海洋物理学家莫里斯·尤因的人的研究有关。他曾经担任过美国地球物理学会主席和美国地震学会主席,在地震波、海底地形、 During the latter part of World War II, each American pilot was required to carry small metal balls while flying over the sea. If the parachutists were parachuted, dropped to the sea and wearing helpless life jackets, A metal ball to the sea. At first, these American soldiers did not understand why they should do so. Japan, the German military capture these balls and found that there is only air inside, they are also this “secret weapon” are puzzled. In fact, this secret and the famous American geologist and marine physicist Maurice Ewing’s research. He has served as president of the American Geophysical Society and chairman of the American Seismological Society, in the seismic wave, the sea bottom terrain,