Electromagnetic radiation is the energy released from charged particles moving across the electromagnetic field in the form of waves. This type of energy, referred to as radiation, has varying degrees of strength. Longer, less intense waves, such as radio waves, produce less radiation. Shorter, more intense waves, such as gamma rays, give off radiation that is harmful to humans if they are exposed to large doses.
Exposure to high frequency electromagnetic radiation can lead to serious health effects, including radiation sickness, cancer and an abundance of other side effects. Radiation sickness occurs when humans are affected with high amounts of electromagnetic radiation over a short period of time. Such events happen during nuclear accidents or excessive exposure to medical radiation. Some symptoms include fatigue, fainting, nausea, bruising, burns, ulcers, bleeding and possible deformity.
One of the most well known forms of cancer caused by direct exposure to electromagnetic radiation is skin cancer. According to the Department of Health and Human Services, solar radiation, sunlamps and broad-spectrum UVR are human carcinogens, and UVA and UVB are reasonably anticipated to be human carcinogens. Human carcinogen means it can damage DNA, whereby the DNA loses control of how and when cells grow and divide. This damage is what causes the growth of cancerous tumors.
Ultraviolet radiation is divided into three wavelengths, UVA, UVB and UVC. UVC rays are blocked from our atmosphere and do not pose a risk. The most damaging of the three wavelengths are UVA and UVB; both have been proven to cause squamous cell carcinoma, basal cell carcinoma and, in severe cases, melanoma. Length of exposure to electromagnetic radiation from the sun, as well as regular exposure to tanning beds, puts people at greater risk for skin cancer. In addition to cancer, UV radiation can lead to acute symptoms such as sunburns or damage to the cornea.
Other forms of cancer linked to electromagnetic radiation are lung cancer, thyroid cancer, multiple myeloma, breast cancer and stomach cancer. The sources of ionizing radiation (high level radiation) are found in many different forms. Natural radiation, such as cosmic rays reaching the earth from outer space, naturally occurring radiation from soil and rocks, and radon gas all occur as background radiation. Radiation may also occur in medical imagining, radiation therapy, nuclear plants, products, food irradiation and body scanners.
Low intensity wavelengths, such as microwaves, radio waves and infrared rays also release harmful electromagnetic radiation. Although the risk of cancer from these waves historically considered to be much less, there is still potential for health decline. Danger in these low frequency waves is more attributed to long-term exposure. High-risk groups may include workers such as welders, electricians, power plant workers and phone technicians who work within range of strong electromagnetic fields, such as cell phone towers. Anyone who is exposed to low and high intensity electromagnetic radiation is more susceptible to health risk. For this reason, people are urged to limit exposure from man-made sources, store devices away from the body, invest in grounded sources or purchase a laptop shielding device.
This Article was written by Jacques Lem. Visit our site at http://codefreedom.org/ and http://codefreedom.org/category/telephony-internet/ for more details.