There are two kinds of radiation: ionizing radiation (such as nuclear bombs, x-rays, marble), electromagnetic radiation (such as cell phones, computers, induction cookers)
Here is a bit of a need to explain? Electromagnetic radiation can only change the current to produce;
such as battery-driven small light bulb there is no radiation, because his voltage and current is stable and unchanged;
such as cell phones have radiation, because in the emission of wireless signals need to change the current and voltage;
Ionizing radiation is the general name of all the radiation that can cause ionization of matter, and there are many types of high-speed charged particles alpha particles, beta particles, protons, uncharged particles, and the radiation that can cause ionization of matter. Particles, protons, uncharged particles are seeds, as well as X-rays, γ-rays. α-rays are a charged particle stream, due to the charged, it is easy to cause ionization wherever it goes. α-rays have a strong ionizing ability, this nature can be used. It also brings about certain destructive places, and has a greater ability to destroy tissues in the human body. Because of its large mass, poor penetration ability, the range in the air is only and centimeters, as long as a piece of paper or healthy skin can be blocked. β-rays are also a kind of high-speed charged particles, its ionization ability than α-rays is much smaller than the α-rays, but penetration ability than α-rays is large, but with X, γ-rays than β-rays have a shorter range, and can easily be absorbed by the aluminum foil, plexiglass, and other materials. x-rays and γ-rays have more or less the same properties, are Electromagnetic waves without electric wavelength, so they are collectively referred to as photons. Both penetration is extremely strong, to pay special attention to accidental exposure protection.
Electromagnetic radiation is composed of electrical and magnetic energy moving through space***, and this energy is generated by the movement of charges; for example, a radio frequency antenna that is transmitting a signal emits a moving charge, which generates electromagnetic energy. The electromagnetic "spectrum" includes all kinds of electromagnetic radiation, from very low frequency to very high frequency. In between are radio waves, microwaves, infrared, visible and ultraviolet light. The general definition of the radio-frequency portion of the electromagnetic spectrum refers to radiation with frequencies ranging from about 3 kHz to 300 GHz.?The difference between the two: 1. Ionizing radiation is all the radiation that can cause the ionization of matter, and electromagnetic radiation is composed of space *** with the transfer of electrical and magnetic energy. 2. Ionizing radiation exists in nature, but currently artificial radiation has been in all areas, specializing in the production, use and research of ionizing radiation, known as the radiation staff. There are various sources of electromagnetic radiation. Inside and outside the human body are covered by natural and man-made sources of radiation emitted by the electrical and magnetic energy; lightning is one of the examples of natural sources of radiation. As for man-made sources of radiation, they include microwave ovens, radios, television and radio transmitters and satellite communication devices, etc. 3. Ionizing radiation has a greater destructive capacity for the tissues in the human body. Due to its large mass and poor penetrating ability, the range in the air is only and centimeter, as long as a piece of paper or healthy skin can block. Electromagnetic radiation is different,? Electromagnetic radiation is very harmful to the human body, May 8, 1999 closing of the national electromagnetic radiation environmental pollution sources of the status quo: radio and television transmitting equipment *** 10235 units, a total power of 1.3 million kilowatts; industrial medical equipment *** 15335 units, 3 Earth satellites, big brother base station total of nearly 10,000; air spider web like high-voltage power transmission lines, etc. are emitting leakage of electromagnetic waves to the outside. The intensity of electromagnetic radiation is closely related to two factors, namely, distance and time. Daily life in the use of electrical appliances to pay attention to some methods, can also play a radiation protection effect. For example, do not place household appliances too centrally or often used together. Try not to place computers, refrigerators and other appliances with strong electromagnetic radiation in the bedroom. When using the computer, to maintain an appropriate distance from the computer screen, preferably in 0.5 meters away, the closer the distance, the stronger the radiation. Screen brightness should not be adjusted too high, the brighter the screen, the stronger the radiation. After using the computer should wash your face and hands in a timely manner, because there is a large amount of static electricity on the surface of the computer monitor, and the dust it gathers will fall on the skin exposed. In addition, do not be in a hurry when you pick up the cell phone. Cell phone in the moment of connection and charging calls, the release of electromagnetic radiation is the largest, it is best to press the connect button for two or three seconds before answering. As for pregnant women often wear anti-radiation clothing, although many of the price is not expensive, but the anti-radiation effect is not big, wear most of them also figure a psychological comfort