3月11日,日本发生里氏9.0级大地震并引发海啸。3月15日,位于震区的福岛第一核电站受到冲击引发了氢气爆炸,并且产生了最高值达每小时400毫西弗(辐射量单位)核辐射。什么是核辐射呢?简单来说,放射性物质以波或微粒形式发射出的一种能量就叫核辐射。核电站核辐射主要是α、β、γ三种射线:α射线是氦核,只要用一张纸就能挡住,但吸入体内危害大;β射线是高速电子,皮 On March 11, a magnitude 9.0 earthquake struck Japan and triggered a tsunami. On March 15, an attack on the Fukushima Daiichi nuclear power plant in the quake zone triggered a hydrogen explosion and produced a maximum of 400 millisieverts (radiant units) of nuclear radiation per hour. What is nuclear radiation? In simple terms, the radioactive material emits energy in the form of waves or particles called nuclear radiation. Nuclear power nuclear radiation is mainly α, β, γ three kinds of rays: α-ray is a helium nucleus, as long as a piece of paper can be blocked, but inhaled the body is harmful; β-ray is a high-speed electronic, leather