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自从1895年伦琴发现X射线,1898年居里夫人第一次从沥青中分离出镭之后不久,人们就开始注意到放射线对人体的危害。天然花岗岩等装饰性建筑材料广泛应用,但随之也给人们带来了一些副面影响——天然花岗岩的放射性对人体的危害。
Shortly after Raymond discovered X-rays in 1895 and Marie Curie first isolated radium from bitumen in 1898, people began to notice the harmful effects of radiation on the human body. Natural granite and other decorative building materials are widely used, but also brought some secondary side effects - the harm of natural granite radioactivity on the human body.