Radiation and health – have to say the love-hate relationship of: radiation is a what? Every day I hear people say: this has radiation, will destroy my only a little brain cells; that also has radiation, will ruin my hard work to drink medicine to eat meat to make up a little sperm ……. It’s terrible! But think back carefully, this radiation comrades in the end is a what the thing? In the end, it has no bad effects on our health? Radiation is what, in fact, in secondary school physics textbooks have told us: radiation refers to the phenomenon of energy in the form of waves or subatomic particles moving in the case of non-dependent medium for transmission. So we can divide the radiation into particle radiation and electromagnetic radiation. Particle radiation is some subatomic particles, such as electrons, neutrons, protons, helium nuclei and so on to fly out at a high speed, the particles themselves with a certain kinetic energy; electromagnetic radiation is due to the atomic charge around the electromagnetic field alternating changes in electromagnetic waves, the energy in the form of electromagnetic waves released, the formation of electromagnetic radiation. For example, the warm sunlight that shines on us every day, listening to the “trumpet broadcast” as a child. FM, AM, shortwave (eavesdropping on enemy stations, heh heh), the microwave oven used to heat up your big feet with oil at breakfast, the H7N9 light temporary (weakly ask, when you go ah?) Your cough must be taken when the chest X-ray, these are all electromagnetic radiation. In addition to the above classification method, our most common classification method is according to the size of the radiation energy: If the energy of some radiation is relatively high, commonly known as “force”, then when it is shot to other irradiated objects, it will be irradiated objects outside the atomic turn of the electron to have a beautiful encounter, but also generous to the The result is that the sad nucleus loses the electron and thus carries a positive charge. This phenomenon is called “ionization”, and this type of radiation with high energy is called “ionizing radiation”, including: alpha rays (rays consisting of helium nuclei), beta rays (rays consisting of electrons), gamma rays (electromagnetic waves with frequencies above the 19th power of 10 Hz), X-rays (electromagnetic waves with frequencies between 17 and 19 Hz of 10), high-energy neutrons, and so on. And other lower energy radiation, to the electron lady also less, the result of the electron bounced a few times (energy leap) was found by the nucleus of the atom, the elopement of the fantasy nipped in the bud, this type of radiation, we call non-ionizing radiation. This includes: radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet light, slow neutrons, and so on. So, a variety of radiation is actually full of our world, no such radiation, we estimate that we are back to the primitive society, we are actually “in the spoke do not know the spoke”.