雷，起源于带有电荷的云朵，它会对地面突出的巨大树木、高层建筑、电杆等物体放电，不仅能将高大建筑击毁，而且会将突出物附近的人、畜击毙或击伤，有时还可引起森林大火。雷电虽凶险，只要采取防护措施，就可以避免或减轻雷电的伤害。一、高大楼房顶部要装避雷针，它的作用 Ray, which originated in a charged cloud, discharges large trees, tall buildings, poles and other objects that protrude from the ground. It can not only destroy tall buildings but also kill or injure people and animals near the protrusions. Sometimes it can cause forest fires. Although lightning dangerous, as long as the protective measures, you can avoid or reduce lightning damage. First, the top of the tall buildings to install lightning rod, its role