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.
Do you know why lead plates are radiation proof?
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) Some say that radiation is emission ww.zxsxfh.com
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.