推荐回答(2个)
打雷时不要把窗户和门都开,空气对流有可能会引起球形闪电。
防雷须知
在打雷下雨时,严禁在山顶或者高丘地带停留,更要切忌继续蹬往高处观赏雨景,不能在大树下、电线杆附近躲避,也不要行走或站立在空旷的田野里,应尽快躲在低洼处,或尽可能找房层或干燥的洞穴躲避。
雷雨天气时,不要用金属柄雨伞,摘下金属架眼镜、手表、裤带,若是骑车旅游要尽快离开自行车,亦应远离其它金属制物体,以免产生导电而被雷电击中。
在雷雨天气,不要去江、河、湖边游泳、划船、垂钓等。
在电闪雷鸣、风雨交加之时,若旅游者在旅店休息,应立即关掉室内的电视机、收录机、音响、空调机等电器,以避免产生导电。打雷时,在房间的正中央较为安全,切忌停留在电灯正下面,忌依靠在柱子、墙壁边、门窗边,以避免在打雷时产生感应电而致意外。
当发生雷击时,旅伴应立即将病人送往医院。如果当时呼吸、心跳已经停止,应立即就地做口对口人工呼吸和胸外心脏按摩,积极进行现场抢救。千万不可因急着运送去医院而不作抢救,否则会贻误病机而致病 死亡。有时候,还应在送往医院的途中继续进行人工呼吸和胸外心脏按摩。此外,要注意给病人保温。若有狂躁不安、痉挛抽搐等精神神志症状时,还要为其作头部冷敷。对电灼伤的局部,在急救条件下,只需保持干燥或包扎即可。
雷雨天气发生时,即使在安装了避雷针的情况下,也应该迅速拔掉室内电视、电冰箱以及天线电源的插头,防止空间电磁波干扰造成不必要的损失。此外,从电闪雷鸣的形成和发生过程来看,空旷场地上、建筑物顶上、高大树木下、靠近河湖池沼以及潮湿地区是雷击事故多发区。
球状闪电是闪电形态的一种,亦称之为球闪,民间则常称之为滚地雷。球状闪电的平均直径为25厘米,大多数在10~100厘米之间,小的只有0.5厘米,最大的直径达数米。球状闪电偶尔也有环状或中心向外延伸的蓝色光晕,发出火花或射线。颜色常见的为橙红色或红色,当它以特别明亮并使人目眩的强光出现时,也可看到黄、蓝和绿色。其寿命只有1~5秒,最长的可达数分钟。 球状闪电的行走路线,一般是从高空直接下降,接近地面时突然改向作水平移动;有的突然在地面出现,弯曲前进;也有沿着地表滚动并迅速旋转的;运动速度常为每秒1~2米。它可以穿过门窗,常见的是穿过烟囱后进入建筑物,它甚至可以在导线上滑动,有时还发出“嗡嗡”响声。多数火球无声消失,有的在消失时有爆炸声,可以造成破坏,甚至使建筑物倒塌,使人和家畜死亡。遇人遇物后即发生惊人的爆炸,产生刺鼻的气味,造成伤亡、火灾等事故。 预防球状闪电的办法是,在雷雨天气,紧闭门窗,避免穿堂风。如果遇到飘浮的“火球”,轻轻的避开它,千万不要去碰它。 科学家推测,球状闪电是一种气体的漩涡产生于闪电通路的急转弯处,是一团带有高电荷的气体混合物,主要由氧、氮、氢以及少量的氧化氢组成。通常发生在枝状闪电之后,似乎枝状闪电是产生球状闪电的必要条件。球状闪电较为罕见,因而研究它十分困难,至今仍然是自然界中的一个谜 打雷的时候是绝对不能玩电脑
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