Product Description
When we need emergency shelter, such as going to a nuclear-contaminated area, or conducting radioactivity experiments in a laboratory, we need to quickly understand the basic radiation intensity, just by checking the real time value. When it is necessary to test the decoration environment with suspicious radioactive substances such as marble and artificial stone, there is no time urgency, but we need to pay attention to accuracy, and we should check the average value. When people are exposed to radioactivesubstances or the environment for a long time, such as radiologists, radiation drug administrators, it is necessary to check the cumulative dose, and they can check thecumulative value over months or years.The national standard only sets an upper limit for the effective dose absorbed each year. This does not mean that as long as the national standard is exceeded, it will cause great harm, and it will not exceed the national standard. The radioactive destruction of biological cells is highly random and has no reciprocal relationship. The general rule is less is better, smaller is better.Effective dose: In order to describe the magnitude of the health hazard caused by radiation and quantitatively evaluate the possible risk caused by radiation exposure, the concept of effective dose is artificially introduced in the evaluation of radiation protection. The unit of effective dose is Sivert (Sv), named after the famous Swedish nuclear physicist Sivert. Sievert is a large unit of value, in practical applications, usually more millisieverts (mSv) (millisieverts) or microsieverts (μSv) (microsieverts), 1Sv = 1000mSv; 1mSv = 1000μSv. The annual effective dose of natural background radiation to the general public is2.4mSv (world average)