The most harmful radioactive material is the fallout from nuclear weapons tests. But because it is difficult for us to come into contact with such things in our life, it is strictly controlled by our country. The "three wastes" produced by the atomic energy industry will pollute the surrounding environment to a certain extent, which means that the vicinity of such industries may be exposed to radiation.
Radioactive pollution caused by medical radiation. Due to the wide application of radiation in medicine, medical radiation sources have become the main environmental artificial pollution sources. Going to the hospital for a physical examination may be that the mechanical equipment is radioactive, but it has basically no effect on the body, belonging to the fifth of the five types of radioactive sources.
In addition to medical treatment, it also has a large number of applications in industry. As far as the radioactive source discovered by this person is concerned, it can check whether the mechanical equipment itself has cracks or internal damage, and is widely used in the fields of construction, electricity and so on. Of course, they are kept in professional shielding containers, and the staff also operate according to regulations during their work, which will not cause trouble to our daily life.
In fact, our daily consumer goods also contain natural or artificial radionuclides, such as the radiation generated by radioactive dials, luminous watches and even televisions. This kind of radioactivity is basically harmless to the human body, so there is no danger to life, so don't worry, but watching TV all the time is still not good.