importance of electromagnetic radiation

The most relevant ones are the frequency v and the wavelength λ, which are related through λ = c/v, where c is the speed of light in the medium. The ionizing radiation source could be an electron beam, x-rays (machine generated), or gamma rays (from Cobalt-60 or Cesium-137), and the energy of a gamma ray is above 2 × 10 −14 J. All EM waves are made up of photons that travel through space until they interact with matter; some waves are absorbed and others are reflected. Electromagnetic radiation: The Electromagnetic radiation are considered as a waves of the energy. Radiation is energy in the form of waves or particles that comes from a source and travels through space or through a medium. OR. in various activities within the electromagnetic environment. The killing and destructive power of electromagnetic radiation can be used constructively for curing the incurable diseases by eradicating the disease producing pathogens and micro organisms like bacteria, virus & fungi. The electromagnetic spectrum includes radio and TV waves, microwaves, infrared, visible light, ultraviolet, x-rays, g-rays, and cosmic rays, as shown in the figure above. However, we must emphasize the importance of remaining alert to the danger of overexposure to electromagnetic radiation. This method of long distance communication … HEAT Solar electromagnetic radiation is generated by the extremely hot plasma of the Sun, and this thermal radiation heats the Earth by the reverse process of absorption, generating kinetic, thermal energy in electrons and atomic nuclei. Electromagnetic Radiation (EMR) • is radiated by atomic particles at the source (the Sun), • propagates through the vacuum of space at the speed of light, • interacts with the Earth's atmosphere, • interacts with the Earth's surface, • interacts with the Earth's atmosphere once again, and All electromagnetic waves move at the speed of light, including light itself. These equations state that electromagnetic radiation consists of quantized, traveling fluctuations in the electromagnetic field. The electromagnetic (EM) spectrum encompasses all wave frequencies, including radio, visible light and X-rays. The Earth also emits thermal radiation, but at a much lower intensity because it is cooler. Radiation: Here, Radiation is defined broadly to include charged particles such as alpha α and beta β radiation. Electromagnetic radiation is a form of energy that is present all around us and takes various forms like microwaves, television waves, radio waves, gamma rays, X-rays, etc. Electromagnetic radiation having many hazardous effects on human beings and other living forms has the other side of having disease curing effect. Ultraviolet rays are germicidal in nature and destroy bacteria, viruses and moulds from various surfaces, air or water. Some traditional applications that use electromagnetic radiation include the entire family of therapies known as electrophysical agents. These waves are also called electromagnetic radiation because they radiate from the electrically charged particles. In the case of propagation in a vacuum, c = c o = 2.998 × 10 8 m/s. Many people think that electromagnetic radiation is not dangerous, while there are others in the scientific community who are still doing studies on this subject. Fortunately, a few simple lifestyle adjustments can reduce the health risks. Electromagnetic radiation - Electromagnetic radiation - Relation between electricity and magnetism: As early as 1760 the Swiss-born mathematician Leonhard Euler suggested that the same ether that propagates light is responsible for electrical phenomena. The uses of electromagnetic waves, this section describes some of the qualities and uses of different waves on the electromagnetic spectrum. The Earth also emits thermal radiation, but at a much lower intensity because it is cooler. This chapter contains new simulation results concerning the physical foundations of how microwave tubes operate based on Cherenkov’s mechanism of radiation (interaction with slow electromagnetic wave) and some experimental results connected with improving the output characteristics of the magnetrons (a mm band surface wave magnetron and a magnetron with two RF … For this reason, experts refer to electromagnetic radiation as the ‘far-field.’ 4. Electromagnetic Radiation in Quantum Mechanics For this purpose, some measurements were carried out with Narda EMR-300 radiation meter which has a capability of measuring total electromagnetic radiation level from 100 kHz to 3 GHz frequency. It was known from Maxwell’s equations that this radiation traveled at the speed of light and from this it was realized that light itself, and the closely related infrared heat radiation, were actually electromagnetic waves. The waves that are used in this way are radio waves, microwaves, infrared radiation and light. Electromagnetic field produce electromagnetic radiation also referred to as EM radiation. Uranium is a very radioactive element that occurs in several parts of the globe and can be used in the production of nuclear weapons whose destructive effects is … From the experiments of Hertz and others, Maxwell’s predictions that oscillating charges emitted electromagnetic radiation had been confirmed, at least for simple antennas. Indeed, studies have linked low-level electromagnetic radiation (EMR) exposure from cellphones to an 8 percent reduction in sperm motility and a 9 percent reduction in sperm viability. For GCSE physics revision. Electromagnetic radiation exists across a wide range of frequencies and can be organized on a frequency spectrum as follows: radio waves, infrared waves, visible light, ultraviolet rays, x-rays, and gamma rays. The idea of using a signal lamp to communicate was used in the 19th century. The electromagnetic rays and radiations emitted by these elements is also of immense importance both medically and industrially. The purpose of this article is to dig into the details of what this electromagnetic radiation is, and to explore if there are any harmful effects of electromagnetic radiation on humans. In this piece of article, we will discuss electromagnetic radiation and its properties. 7 Regions of the Electromagnetic Spectrum 769 Words | 4 Pages. The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.. Electromagnetic (EM) radiation occurs both naturally (e.g., sunlight) and from man-made sources (e.g., wireless devices). Electromagnetic radiation is the foundation for working of radar which in turn is used for guiding and remote sensing the study of our planet Earth. 8, 9 Wi-Fi equipped laptop computers have also been linked to decreased sperm motility and an increase in sperm DNA fragmentation after just four hours of use. Infrared radiation is very close to optical light, and therefore very similar techniques are … The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling on Earth from every direction with nearly uniform intensity. Electromagnetic radiation above 2500 × 10 6 MHz is mostly referred to as ionizing radiation. Electromagnetic radiation consists of waves of electric and magnetic energy moving together (i.e., radiating) through space at the speed of light. The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from below one hertz to above 10 25 hertz, corresponding to wavelengths from thousands of kilometers down to a fraction of the size of an … Solar electromagnetic radiation is generated by the extremely hot plasma of the Sun, and this thermal radiation heats the Earth by the reverse process of absorption, generating kinetic, thermal energy in electrons and atomic nuclei. Infrared Radiation: Infrared radiation is the band of electromagnetic radiation that occupies wavelengths between 0.74 micrometers up to 300 micrometers. Electromagnetic radiation, the larger family of wave-like phenomena to which visible light belongs (also known as radiant energy), is the primary vehicle transporting energy through the vast reaches of the universe. There are 7 regions in the electromagnetic spectrum and they are gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves and radio waves. As EM energy travels through the space, it behaves either longitudinal or transverse waves and it contains both components of electric and magnetic fields. Electromagnetic Radiation and Life: Bioelementological Point of View 195 influence of millimeter wave radiation there is observed increased accumulation of a number of trace elements from the environmen t: selenium, chromium, zinc, copper, lithium, etc., with dramatic change in elemental composition of the algal cells (Tambiev et al., 2000-2011). Electromagnetic radiation is used for communications and transmission of information. These are discussed in more detail later in this section but generally are used with the purpose of reducing pain, muscle spasms, inflammation, and/or improving superficial/deep circulation status and subsequent healing potential. Researchers Create an Electromagnetic "Black Hole" the Size of a Salad Plate. Because the wavelength of electromagnetic radiation can be as long as 40 m or as short as 10-5 nm, the visible spectrum is only a small portion of the total range of electromagnetic radiation. EMR Impairments To Immune System – The immune system is impaired in the presence of A discussion of the various methods used to detect electromagnetic energy is beyond the scope of this TRAMAN. Melatonin Reduction – Electromagnetic Radiation reduce the levels of melatonin in the human body. Since thermal radiation is electromagnetic radiation, the properties of the propagation of electromagnetic waves can be applied. Unfortunately, all of today’s technology emits Electromagnetic Radiation, or Electromagnetic Field (EMF) radiation, which can cause health problems over time which include fertility issues, DNA damage, electromagnetic hypersensitivity, and many other health concerns. Examples of non-ionizing radiations are: • Static electromagnetic fields from direct current (0 Hz) • Low-frequency waves from electric power (50-60 Hz) • Extremely Low Frequency (ELF) Electromagnetic waves are free to radiate without the help of moving charges that produce them as they have enough distance. (There are 1 million micrometers in one meter.) They travel through empty space as well as through air and other substances. (1997), Abelin (1999) and many others. 10 Electromagnetic waves are produced by the motion of electrically charged particles. Electromagnetic radiation is a form of energy that is emitted and absorbed by charged particles known as electrons. Sources: Dr. Neal Cherry (2000), Burch et al. Electromagnetic Radiation (EMR), with energy levels below that required for effects at the atomic level. In comparison with both mechanics and optics, however, the science of electricity was slow to develop. 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