Ionizing radiation and electromagnetic radiation are harmful to the human body, the difference between the two:
One: the definition of different
Ionizing radiation refers to radiation that carries enough energy to make the electrons in the atoms or molecules of a substance into a free state, thereby causing these atoms or molecules to undergo the phenomenon of ionization.
Electromagnetic radiation is made up of electrical and magnetic energy moved together in space*** which is produced by the movement of electric charge.
Two: the principle of different
Ionizing radiation is able to make the affected material ionization phenomenon of radiation, that is, the wavelength of less than 100nm electromagnetic radiation. Ionizing radiation exists in nature.
Electromagnetic waves generated by the interaction of electric and magnetic fields, electromagnetic wave emission into the air or leakage of the phenomenon, called electromagnetic radiation. Electromagnetic radiation is an invisible and untouchable field. Human survival of the earth itself is a large magnetic field, its surface thermal radiation and lightning can produce electromagnetic radiation, the sun and other planets from outer space to produce a steady stream of electromagnetic radiation. Electromagnetic radiation is a material internal atoms, molecules in motion in an external form.
Three: different characteristics
Ionizing radiation is a short wavelength, high frequency, high energy rays (particles or waves of double form). Ionizing radiation can emit (ionize) one or several electrons from an atom, molecule, or other bound state. The full name of ionizing radiation is ionizing radiation, which is the radiation that can directly or indirectly ionize the atoms and molecules of a substance through interaction with the substance.
Electromagnetic radiation (sometimes abbreviated EMR) self-propagating waves in a vacuum or in matter. EMR has an oscillation of electric and magnetic field components that propagate energy in two mutually perpendicular directions, respectively. The wavelength and frequency determine another property of EMF: EM waves are carried by small particulate photons. A photon of a high-frequency (short-wavelength) electromagnetic wave will carry more energy than a photon of a low-frequency (long-wavelength) electromagnetic wave.
Four: different classifications
Ionizing radiation is divided into:
Natural radiation
Human beings mainly receive natural radiation from nature. It comes from the sun, cosmic rays and radionuclides present in the earth's crust. Radon spills from the ground are another important source of natural radiation. Cosmic rays from space include energized light quanta, electrons, gamma rays and X-rays. The major radionuclides found in the earth's crust are uranium, thorium, and polonium, as well as other radioactive substances. They emit alpha, beta or gamma rays.
Man-made radiation
Radiation is widely used in medicine, industry and other fields. Artificial radiation is mainly used in: medical equipment (e.g., medical and imaging equipment); research and teaching institutions; nuclear reactors and their auxiliary facilities, such as uranium mines and nuclear fuel plants. Facilities such as these are bound to produce radioactive waste, some of which leaks doses of radiation into the environment. Radioactive materials are also widely used for everyday consumption, such as glow-in-the-dark watches, glazed ceramics, artificial dentures, and smoke detectors.
Related occupations also have boiler and pressure vessel nondestructive testing, commonly used command source to γ source for as a signal source, radiographic film machine to emit X-rays, the above two are commonly used in the nondestructive testing industry.
Electromagnetic radiation
Electromagnetic radiation affecting our living environment is divided into natural electromagnetic radiation and man-made electromagnetic radiation. Nature caused by lightning, electricity, electromagnetic radiation belongs to the category of natural electromagnetic radiation, while man-made electromagnetic radiation pollution mainly includes pulse discharge, frequency alternating magnetic field, microwave, radio frequency electromagnetic radiation.
References:
Baidu Encyclopedia - Electromagnetic Radiation
Baidu Encyclopedia - Ionizing Radiation
Baidu Encyclopedia - Electromagnetic Radiation
Baidu Encyclopedia - Electromagnetic Radiation Electromagnetic Radiation