鉛的原子序數(shù)是82，是自然界中原子序數(shù)比較高的物質(zhì)。當(dāng)然阻擋核輻射的能力比較強(qiáng)。比鉛更高的物質(zhì)阻擋能力會(huì)更強(qiáng)。但可惜，這些物質(zhì)在地球上都是稀有物質(zhì)，造價(jià)相對(duì)昂貴(比如原子序數(shù)為79的金，原子序數(shù)為83的鉍），更頭痛的是，這些物質(zhì)自身一般就具有放射性。當(dāng)然不如用鉛來(lái)阻擋核輻射劃算。
The atomic number of lead is 82, which is the substance with higher atomic number in nature. Of course, the ability to block nuclear radiation is relatively strong. Higher material barrier than lead will be stronger. Unfortunately, these substances are rare on earth, which are relatively expensive (for example, gold with atomic number of 79 and bismuth with atomic number of 83). What's more, they are generally radioactive. Of course, it's better to use lead to block nuclear radiation.
你清楚為什么鉛板能夠防輻射嗎?
Do you know why lead plates are radiation proof?
由于鉛板密度高，使得鉛板顆粒之間的縫隙非常小，小于紫外外光譜長(zhǎng)度，即小于輻射產(chǎn)生的光譜長(zhǎng)度，這樣輻射的波長(zhǎng)就通過(guò)不了鉛板，所以就能隔離輻射。
Because of the high density of the lead plate, the gap between the lead plate particles is very small, which is less than the length of the UV spectrum, that is, the length of the spectrum generated by the radiation, so the radiation wavelength can not pass the lead plate, so the radiation can be isolated.
1）有的說(shuō)輻射是釋ww.zxsxfh.com
1) Some say that radiation is emission ww.zxsxfh.com

2）各種可見(jiàn)光，有原光，有原光合成的各種復(fù)色光，那么紫外外光譜，也會(huì)和各種可見(jiàn)光合成多種共存的電磁波。紫外線(xiàn)對(duì)人體產(chǎn)生的傷害，我們說(shuō)是太陽(yáng)輻射的電磁波，同樣核輻射產(chǎn)生的傷害，是紫外外線(xiàn)，即也是電磁波，而不是粒子流。
2) All kinds of visible light, including the original light, and all kinds of polychromatic light synthesized by the original light, then the ultraviolet spectrum will also synthesize a variety of coexisting electromagnetic waves with all kinds of visible light. The damage caused by ultraviolet radiation to human body is the electromagnetic wave of solar radiation. The same damage caused by nuclear radiation is the ultraviolet line, which is also the electromagnetic wave, not the particle flow.