Electromagnetic Fields and their Effect on Human

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[...] Discussion: As we so how Electromagnetic changed the world to an easy one, its effects still a controversial topic, and many studies in different universities are being conducted on this topic, some heath effects are known as skin cancer caused by Ultraviolet and others are still unknown especially on the long- term exposure. Conclusion: Long term effects of electromagnetic fields is the main concern because researches show that short term effects don't have many negative consequences on human beings, and the non-ionizing band has no significant negative effect so far, therefore the use of mobile phones, televisions and other daily electronic devices is safe, Ultraviolet , x-rays and gamma rays known to be harmful on human being, there are precautions and instructions that must be followed for people who are subjected to these radiations. [...]

[...] The exposure to radio frequency waves is caused due to many sources: Visible lights ,ultraviolet lights and infrared lights, microwaves , broadcasting stations, AC power lines , medical x-rays gamma rays. Those sources of EM waves differ from one another depending upon the frequency and the wave length, it is important to mention that those waves travel at speed of light which is around 3 million(m/s) the comparison now is so obvious , very high frequency wave has a very low wave length and vise versa, the following table is gives far more details about some other waves and their wavelength and frequency Another important property of EM waves is their energy , waves that is high in frequency has high energy and waves that is low in frequency is low in energy too, the diagram below best describes this property Examples of EM radiation and traveling waves: In order to best describe how Electromagnetic wave radiate, a cellular phone example is perfect to explain the process, base stations produce radio frequency waves which are received by cellular phones ,and those cellular are always with or around us hence the effect of those radio frequencies waves, the process is worse while the phone is close to human. [...]

[...] Electromagnetic Fields and their Effect on Human Abstract: Electronic revolution has changed human life, since the early beginning of human being history humankind has always been trying to creative new things in all fields, the use of electric devices have became mandatory especially in communication like wireless communication links ex (mobile phones),nowadays human body is always exposed to electromagnetic ration with different intensity, electromagnetic field is produced by many ways and has many frequency ranges, EMF has been added to environmental list that are possible threat to human health, and from this point studies were started to explore the underlying effects of EMF on human being Background: There are four forces that controls the universe , nuclear force, weak- interaction force, gravitational force and electromagnetic force, Ever Since the discovery of electric and magnetic fields human has used them to develop and revolutionize the world ,electric fields is generated due to stationary electric charges and magnetic field is due to DC current , the interaction of electric and magnetic field is called electromagnetic field, the study of electromagnetic field has helped engineering and engineers in design, technology and discovery of far more complicated systems, not to mention that The most notable property of electromagnetic waves that they cant be seen. Electromagnetic play a huge role in the design of electronic devices and new technology we see those days from integrated circuits, laser , cellulars and microwaves, optical fibers, radars satellites and most of all medical devices. [...]

[...] In Australia more than 1500 people die from skin cancer each yeah, and in America one of fifty will develop skin cancer in 2015. In fact Ultraviolet reaches the surface more when ozone levels depleted and the atmosphere loses more of the protective filter function, Although researches show that magnetic fields affect blood composition, immune system, cell growth and neural functions. [...]

[...] Another example is the microwave, it was first discovered by the American engineer Percy Spencer, he was working in an active radar set and he had a chocolate bar in his pocket after a while he found out that the chocolate bar was melted by microwaves in that radar field, to support his discovery he established up a high density electromagnetic field from a magnetron into a a box made of metal and placed some food inside it he found that the temperature of the food rose rapidly and hence the discovery of microwave started, this discovery has also shown the high energy that a microwave has and what it is capable of Effect of EMR on human health: Electromagnetic radiation has known to cause many adverse consequences on human being and animals, they actually depend upon number of factors, the frequency of the wave, specific absorption rate ,and duration of exposure, when the frequency is high it is named ionizing radiation and this name is because the wave would have the capability of breaking chemical bonds and ionizing atoms, it can cause cancer by damaging the DNA, however when the frequency is low it is known as non-ionizing radiation and the effect is absent in this case on human. The specific absorption rate is a measurement energy is absorbed by human at specific rate when exposed to electromagnetic fields As far as health organization concerned the most dangerous EM radiation wave is Ultraviolet from the sun , and health organization statistics can show that, according to world health organization over 65000 cases of skin cancer were reported in 1999 in the united kingdom, and 2000 people die from skin cancer each year. [...]