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辽宁6人遭雷击3人肋骨骨折 居民:大火球袭来

2017-08-09 08:25:24   中国日报

专家揭密:人为何遭雷击为何还能够活命

遭受雷击的人为什么居然还能活命闪电进入人体后,它的举动也令人大惑不解。应该说,几千万伏特的电荷和几十万安培的电流瞬间就能让人毙命,可有些人却活了下来,而且这种人还不在少数。比如说,美国每年就有近900名这样的人。美国约翰·霍普金斯大学的神经病医生纳尔逊·亨德列尔说,那些侥幸遭雷击但是活下来的人非常希望有科学家去研究他们。有人认为闪电和裸露的电线是一回事,一碰着就不会有好结果,其实满不是这样。有时闪电甚至都不会在身体上留下任何痕迹,但是穿透了内脏。或者恰恰相反,只从外面一过,燎着了衣服,烧着了皮鞋。

亨德列尔医生还听说过有这种事:遭雷劈的人身上的汗沸腾起来,全身笼罩着水蒸气。有一位与会代表还说他裤兜里的硬币成了一个银球,另一位代表是金牙,还有人是脖子上的项链和裤子开口处的拉链被烧结成块……然而他们都活了下来。

神经像电线一样“燃烧”研究结果表明:遭雷击的人之所以能活命,是因为强大的电流有时是在几百万分之一秒的瞬间“击透”全身,所以未能总是烧成灰烬。关键是要看体内器官和组织平均值为700欧姆的抵抗力,这个抵抗力越大,后果便越严重。据美国伊利诺伊大学专门研究雷击外伤的专家和复苏师玛丽·埃因·库佩尔说,人遭雷击时首先是作为体内电路的神经纤维“起火”,不过最多是其保护膜受损,这种保护膜就其实质很像电线中的绝缘体。人遭雷击恢复常态后,甚至都没能感觉到有什么变化。有时得几个月后才有所感觉,到那时神经纤维开始“变短”,在一些不该有的地方有了接触。

确实,不少遭遇过雷击的人都曾抱怨自己的动作不够协调,有抽搐、耳鸣和周期性小便失禁现象,还抱怨变得爱发火了。不过也有情况变好的。捷克有个叫扬·格洛瓦切克的说,他遭雷击后阳痿的毛病给治好了。据玛丽·埃因·库佩尔说,那是因为他的脊髓出现了短路,结果出现了新的接点,恢复了负责勃起的神经冲动的传递。

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