I.What is an electromagnetic wave?
The electromagnetic wave is a kind of secondary wave, which is the motion of the electromagnetism field( the ElectroMagnetic Radiation, the brief name EMR), the variety creation magnetic field of the electric field, the variety formation electric field of the magnetic field, the electric field and magnetic fields hand over with each other function but output motion. Electromagnetic wave can be transmitted in the vacuum or dissemination. The electromagnetic wave is transmitted at the greatest speed in the vacuum. Visible light, red and outside light, purple and outside light, microwave and gamma ray etc.s are all electromagnetic waves. Anything that can release the object of the energy all without exception, will release the electromagnetic wave.
II.what is the electromagnetism radiation?
The electromagnetic wave and lights are similar to heat, belonging to a kind of energy , which can radiate or conduct electricity through the air; The number of times that electromagnetic wave changes every second is a frequency, At high frequency of the electromagnetism, the electromagnetic wave does not need to depend on the quality and also can deliver the energy outwardly, this is a kind of radiation. Radiation can be divided into three kinds of: Ionizing radiation ,heat-effect but non-Ionizing radiation and heatless-effect but non-Ionizing radiation. From the professional angle, the electromagnetism radiates a frequency above 100 KHzs of electromagnetic wave.
The source of the electromagnetism radiation.
The electromagnetism radiation can be divided into two kinds, according to its producing reasons, natural and unnatural.The natural electromagnetism radiation is a kind of natural phenomena, mainly coming from the hot radiation, cosmos of thunder and lightning, the sun to shoot the line, permafrost hot radiation and static electricity etc..The unnatural electromagnetism radiation has more extensive sources, having following four kinds of pathses generally, namely
(1)Come from the wireless launching pad, such as the broadcast, television launching pad, radar screen etc..
(2)Come from the strong electricity system of working frequency, such as the high pressure transmitting electric wire road, transformer substation etc..
(3)Come from industry, medical treatment and the applied research equipment, such as the electronics instrument, medical treatment equipments, laser shines on to clap the equipments and transact to automate equipments etc..
(4)Come from the home appliances that people usually use, such as the microwave oven, refrigerator, air condition, electric blanket, television, video recorder, computer, cellular phone etc.
How does the electromagnetism radiation affects the human body
The electromagnetism radiation includes Ionizing radiation and non-Ionizing radiation, the Ionizing radiation can separate the positive and negative charges, then produce the not resumable machine quality sexually transmitted disease to change. Give or get an electric shock to leave the wireless radiation that the radiation is to speak generally not, its quantum takes the energy very small, shortage with separate the positive negative charge of member, can also recover the organic member under the condition of throwing away the exterior function field is perhaps present and strong and low.
The electromagnetism radiation endangers the mechanism of the human body mainly in the forms of a hot effect, non-hot effect and accumulation effect etc.
1. hot effect: above 70% of human body is water, the humidity son is under the influence of the electromagnetic wave radiation rubbing mutually behind, causing the machine body to heat, thus normal work of the organ inside the body.
2. non-hot effect:The organ and organizationses of the human body all exist the weak electromagnetism field, they are stabilities and have the preface, once be interference by the outside electromagnetism field, the weak electromagnetism field that is placed in the equilibrium will soon encounter the breakage, the human body also will suffer the harm.
3. the accumulation effect:If the hot effect is after human body with not hot effect function, to the injury of the human body didn't°yet in time and by one's own before repair, be subjected to again electromagnetic wave radiate, it hurt the degree and will take place the accumulation, long will become the permanent sex abnormal state, endanger the life. For the community of the long-term contact electromagnetic wave radiation, even the power is very small, the frequency is very low, also may induct the surprisingly pathological changes, should cause the vigilance.
The direct result of various waves of with especially high frequency electromagnetic wave and a function of stronger electromagnetism human bodies unconsciously cause the person's energy and the physical strength decreases, easy creation cataract, leukemia, the brain tumor, the cardiovascular disease, the brain function obstacle and women have a miscarriage and barren etc., even cause mankind the immunity function of lowly, thus cause the cancer etc. pathological changes.
Authority statistics enunciation:Usually worked before display in the crowd, the above-mentioned paroxysm outbreak rate is obviously high in common crowd. The electromagnetism radiation is one of the main reasons.
The electromagnetism radiation endangers the human body
1, nerve system:The electromagnetic wave can give or get an electric shock the activity with the interference brain cell living creature. The main idea is a dizziness, tireness; Having difficulties in sleeping .If someone suffers from insomnia or love to sleep, memory decrease etc..
2, sense of vision: The eyeball that spreads hot functions badly, and is sensitive to the electromagnetism radiation, electromagnetism radiation can cause unclear effects, accelerate the aging process, even result in cataract, the machine quality that becomes can't go against injury, directly influence sight, even become blind completely.
3, cardiovascular system: mainly resulting in fast or slow heart-beating, the blood pressure descends etc.. Even having the heart palpitates, chest oppressing etc..
4, immune system: Over a long period of time the contact electromagnetism of the certain strength radiation, can make the body immunity functions lower, descending to the paroxysm resistibility.
5, reproductive system: Man's reproductive organs are sensitive to the electromagnetic radiation, which can lead to the changes of neo-hombreol F, beta factor, estradiol, fertilizing corpuscle, thus impairing sperm mobility or deforming it. Electromagnetic radiation can also disturb the menstrual cycle and cause menstrual disorder.
6,Radiation illness: The electromagnetic radiation can cause acute or chronic diseases, affecting the blood-cell formation system, digestive system and brain etc.
7, Others: The effect of the electromagnetic radiation on euchromosome and sex chromosome can be observed through the animal experiment --- the chromosome aberrations and the changes in number which induct the tumor or the birth of the abnormal child.
Cases about the electromagnetic radiation on the human body：
(1) Under the Microwave Detection by the United States the nearly all the pregnant workers in Soviet Union Embassy subject to the strong microwave radiation had an abortion
(2) 1/3 workers in a high voltage substation in South Korea suffered from leukemia.
(3) According to the investigation made by some postal department in a southern province several years ago, pregnant women working with computers over a long period of time were easier to have a miscarriage than general population.
(4) As is known to all, X ray, which has been just considered carcinogenic to human by the American Ministry of Public Health, is forbidden to applied on the pregnant woman. This regulation is not to protect the pregnant woman, but the fetal.
As is shown, above-mentioned radiation mainly does harm to the blood system, nervous system and reproductive system.
The radiation in the cases above is in high value.
VIII. Radiation value of different electrical appliances