The world we live in today have all kinds of radiation: come from across the galaxy of cosmic rays, nuclear power plant in the family's marble floor brick nuclear fuel from the hospital, X-ray machine to sunshine ultraviolet ray, mac cosmetics wholesale from mobile phones, microwave oven, high tension line in television beacon signal tower, radiation omnipresent, everywhere is may become people fear radiation object. Some people to "radiation" very fear, you can even buy used specially for shielding radio waves "anti-radiation maternity clothes", "anti-radiation sheet". There are various kinds of such as "agaric anti-radiation", "cactus anti-radiation", "bottled mineral water anti-radiation", "drink yoghurt anti-radiation" and so on rumors. So, we really know much of radiation? These anti-radiation equipment really can prevent radiation?
We care about the radiation, can be roughly divided into two kinds, radiological and electromagnetic radiation. These two kinds of radiation and not quite apart from the inside of the gamma rays, yet is the photon energy higher electromagnetic [see in the note].
Radiological is radiation from the radioactive elements, carry very energetic protons, neutrons, helium nuclei, electrons and photons, etc. Radioactive elements will constantly decay reaction, become another kind of material and emit radiation, radiation rays have three: gamerelease rays (helium nuclei), beta rays (eb) and gamma rays (high-energy photons); Atomic mass larger radioactive elements will happen fission reaction (nuclear power plants or bomb) emit neutron or other radiation; The lighter nuclei in certain conditions will occur fusion reactions release neutron or protons ray; And high-energy cosmic radiation in the atmosphere inside also produces a large number of subprime radiation. Our daily life won't meet fusion reaction, fission reaction that produces the rays are also commonly only can find in nuclear power plants, so commonner is ray and the decay of radioactive elements cosmic radiation
We all the time is not yet by various. The decay of radioactive elements in the three rays gamerelease beta, these two rays with the spread of the air inside are very short, and not from close contact with radioactive elements on the human body is no influence, "anti-radiation service" and ordinary clothes for the human body external these two types of ray has certain protective effect. But in fact the water we drink, wholesale mac cosmetics the air we breathe, inside contain a small amount of radioactive elements, such as the air inside has certain carbon 14 (beta decay into nitrogen 14), groundwater and soil contain traces of radon, etc. So in fact, our body has quite amount of radioactive elements, bring us yet from inside to outside. Not to mention mention penetrating strong, and from the X-ray gamma energy cosmic radiation generated in the atmosphere of subprime radiation. The so-called "anti-radiation service", does not prevent these radiation, completely isolate these radiation is not also may be unnecessary. Yet people are generally called this part of the natural radiation or natural radiation (radiation) humor don.
In some cases, in the workplace (nuclear) or life (happened or nuclear pollution city hane in natural radiation) will be outside access to more radiation. As long as the human body gets radiation does not exceed a certain standard, for example and natural radiation smaller lot, can think is safe. For example, the inside of the nuclear fission reaction is nuclear isolated open, there wasn't much radiation leaked, and internal staff in nuclear power plants will normally be equipped with radiation dose of radiation around table, nuclear power plants will also be monitored to ensure staff and the surrounding the safety of the residents. Nuclear power plants around the nuclear radiation to contribute more than natural radiation much smaller for nuclear power plant, there is no reason for fear.
Yet the damage to the biology is how creates? There are many various kinds of molecular biology, molecular internal bond for general key two to 10 electronic volts. The nuclear radiation various microscopic particles of energy with the key than bonds, and therefore have a high possibility of human body molecular bond damage caused by molecular properties change,. In most cases, individual molecules within the cell destroyed after losing the physiological activity, or the whole cell damage will soon after death by human decomposition absorption, reuse, no significant damage. Yet the damage to the biology in food production to normal temperature sterilization, food after the high strength after ray can ensure most bacteria have been culling. The treatment of cancer radiotherapy (radiation) is another kind of application, through to the cancerous parts of the radiation treatment of high strength, make cancer cells (including normal cells), suppressing cancer massive death of purpose.
The possibility of a certain math-model of the cell's DNA molecules from damage windows2universe website) (footnote
In very rare cases, this kind of injury may cause cell changes in the gene chromosome, if that happens to be germ cells gene is changed, so if can produce normal offspring, it is possible to obtain some new characters. Space breeding, radiation breeding is to use high strength of radiation, and then from these seeds treated by high intensity radiation can even after germination of seeds inside screening breed, obtain performance better new varieties. Because natural radiation and produce new genes, varieties in biological evolution process also play a very important role, from that perspective, to maintain a low levels of radiation for biological population evolution and development is beneficial.
Of course, this kind of injury also have certain could lead to normal somatic gene changes, if such changes can't repair and cells still alive, appear likely cells of uncontrolled, copied becomes cancerous. Therefore, mac cosmetics outlet long time accept higher intensity is yet the possibility of cancer. But, if not by words of the radiation intensity, don't worry about. Like front said, daily by is impossible to completely isolated from the math-model of, that the danger is always hard to avoid, worry is useless, not necessary too fear. Try to avoid contact with strong radiological good, for example should be careful radioactive exceeds the marble floors and avoid direct contact with the nuclear materials. Madame Curie died because of leukemia, DengJiaXian in colorectal cancer death.
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