Gamma rays But that's also useful in so-called gamma knives where tumor cells can be "cut" from the brain without actually cutting into the skull. You can get a really bad sunburn from UV, which is just above visible violet color. Melanoma, skin cancer, can also result from UV exposure. But the rest of the visible spectrum is useful for checking out that hot prospect sitting next to you in class. Warms your tootsies on a cold winters night when using a space heater.
At extreme intensity, radiant energy can cause things, including people, to burn. Understand that IR is not heat, but IR causes things to heat up.
Good for keeping airplanes and ships in the harbor from running into each other. However, one's innards can be fried like in a microwave, if one gets too close to the transmitting antenna. Nowadays, with TV programs so bad, there is very little good from the TV waves. At the bottom end of the spectrum, ultra low frequency radios are used for around the world broadcasts as ULF wavelengths literally wrap around the globe. These transmitters can also fry a person if she stands too close.
Uses: Do you like listening to your car or home radio? Thank radio waves. Do you like putting food into a little box, pressing a few buttons, waiting til the box beeps and you get to take out a hot meal? Thank microwaves. The whole communications industry: cell phones, satellite, etc--all a combination of microwaves and radiowaves depending upon the device.
Ever had a broken bone? Ever had a medical or dental exam that involved an X-ray? Like seeing? Thank the "visible" spectrum. Dangers: Extended gamma ray radiation can cause severe mutations or cancers in biological organisms--i. In fact, too much of any radiation can make this happen, even those helpful X-rays. Too much light, or more precisely too intense light can damage human eyes.
This is why one should not look directly at the Sun for extended periods.Electromagnetic radiation energy is produced by various electromagnetic processes. There are two types of electromagnetic radiation, visible light and the invisible ones such as radio waves, infrared light and X-rays. There are certain types of electromagnetic radiation that can be harmful to us.
You may not be fully aware of it but on a daily basis. But we use objects and appliances that give off such energy. This energy may p otentially be damaging to us. As we invent new wireless technologies we introduce future new electromagnetic radiation hazards. Facebook Twitter RSS. What are the Hazards of Electromagnetic Radiation?
Long-term exposure to this type of radiation can cause:. Cataracts Blisters on the skin Sterility and microwave auditory effect, which is hearing buzzing or microwave pulses.
Since mobile phones emit microwave radiation, studies show that it affects part of our brain. As we normally hold it close to our head whenever we use it. Infrared Infrared is commonly emitted by heated objects. Which can be observed on welders who do not use tinted glasses when working. Common examples of objects that emit infrared are:. Remote controls. Thermal imaging cameras for medical purposes and night vision. Burglar alarms. Electric heaters.
Electromagnetic radiation and health
Space telescopes and many more. Ultraviolet is, of course, connected to sunlight. Overexposure to it can cause sunburn, cataracts, melanoma, wrinkles, freckles, liver spots and damage to the cornea.
Other sources of ultraviolet radiation may include the following:. Tanning lamps and beds. Arc welding. Mercury vapour lamps. Industrial processes. Medical and dental practices. X-raysas we know, are used for medical imaging and skin cancer treatment.At sufficiently high flux levels, various bands of electromagnetic radiation have been found to cause deleterious health effects in people.
The last quarter of the twentieth century saw a dramatic increase in the number of devices emitting non-ionizing radiation in all segments of society, which resulted in an elevation of health concerns by researchers and clinicians, and an associated interest in government regulation for safety purposes.
By far the most common health hazard of radiation is sunburnwhich causes over one million new skin cancers annually in United States.Hello neighbor obb download
Sufficiently strong electromagnetic radiation EMR can cause electric currents in conductive materials that is strong enough to create sparks electrical arcs when an induced voltage exceeds the breakdown voltage of the surrounding medium e.
For example, the radio emissions from transmission lines have occasionally caused shocks to construction workers from nearby equipment, causing OSHA to establish standards for proper handling. EMR-induced sparks can ignite nearby flammable materials or gases, which can be especially hazardous in the vicinity of explosives or pyrotechnics.
Dielectric heating from electromagnetic fields can create a biological hazard. For example, touching or standing around an antenna while a high-power transmitter is in operation can cause severe burns. These are exactly the kind of burns that would be caused inside a microwave oven.
The eyes and testes are particularly susceptible to radio frequency heating due to the paucity of blood flow in these areas that could otherwise dissipate the heat buildup.
Typical RF energy levels encountered by the general public are well below the level needed to cause significant heating, but certain workplace environments near high power RF sources may exceed safe exposure limits.
The World Health Organization began a research effort in to study the health effects from the ever-increasing exposure of people to a diverse range of EMR sources. After 30 years of extensive study, science has yet to confirm a health risk from exposure to low-level fields.
However, there remain gaps in the understanding of the biological effects, and more research needs to be performed. Studies are being run to examine cells and determine if EM exposure can cause detrimental effects.
Animal studies are being used to look for effects impacting more complex physiologies that are similar to humans. Epidemiological studies look for statistical correlations between EM exposure in the field and specific health effects. As ofmuch of the current work is focused on the study of EM fields in relation to cancer. There are publications which support the existence of complex biological and neurological effects of weaker non-thermal electromagnetic fields see Bioelectromagneticsincluding weak ELF electromagnetic fields   and modulated RF and microwave fields.
While the most acute exposures to harmful levels of electromagnetic radiation are immediately realized as burns, the health effects due to chronic or occupational exposure may not manifest effects for months or years.Sitaron ke hisab se name rakhna
These currents will typically flow to ground through a body contact surface such as the feet, or arc to ground where the body is well insulated. Shortwave 1. The FCC has restricted the frequencies allowed for medical treatment, and most machines in the US use The behaviour of an electromagnetic EM wave in a substance depends on its frequency. The differing behaviours of different groups in the electromagnetic spectrum make them suitable for a range of uses. With increasing frequency, EM waves become progressively more hazardous.
Radio waves are used for communication such as broadcasting television and radio, communications and satellite transmissions.
Radio waves are transmitted easily through air. They do not cause damage if absorbed by the human body, and they can be reflected to change their direction. These properties make them ideal for communications.
Radio waves can be produced by oscillations in electrical circuits. When radio waves are absorbed by a conductorthey create an alternating current. This electrical current has the same frequency as the radio waves. Information is coded into the wave before transmission, which can then be decoded when the wave is received. Television and radio systems use this principle to broadcast information.
Microwaves are used for cooking food, communications and for satellite communications. Intense sources of microwaves can be dangerous through internal heating of body cells. High frequency microwaves have frequencies which are easily absorbed by molecules in food. The internal energy of the molecules increases when they absorb microwaves, which causes heating.
Microwaves pass easily through the atmosphere, so they can pass between stations on Earth and satellites in orbit. Infrared IR light is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark. The heating effect of IR can cause burns to the skin. Infrared light has frequencies which are absorbed by some chemical bonds.
The internal energy of the bonds increases when they absorb infrared light, which causes heating. This makes infrared light useful for electrical heaters and for cooking food.
All objects emit infrared light. The human eye cannot see this light, but infrared cameras can detect it. Visible light is the light we can see, so is used in photography and illumination. It is also used in fibre optic communications, where coded pulses of light travel through glass fibres from a source to a receiver. Use and dangers of EM waves The behaviour of an electromagnetic EM wave in a substance depends on its frequency.
Radio waves Radio waves are used for communication such as broadcasting television and radio, communications and satellite transmissions. Microwaves Microwaves are used for cooking food, communications and for satellite communications.
Microwaves - Higher High frequency microwaves have frequencies which are easily absorbed by molecules in food. Infrared Infrared IR light is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark. Infrared - Higher Infrared light has frequencies which are absorbed by some chemical bonds.
Visible light Visible light is the light we can see, so is used in photography and illumination.Microwaves are basically extremely high frequency radio waves, and are made by various types of transmitter. In a mobile phone, they're made by a transmitter chip and an antenna, in a microwave oven they're made by a "magnetron". Their wavelength is usually a couple of centimetres. Stars also give off microwaves. So we can use microwaves to cook many types of food. Mobile phones use microwaves, as they can be generated by a small antenna, which means that the phone doesn't need to be very big.
Wifi also uses microwaves. The drawback is that, being small, mobiles phones can't put out much power, and they also need a line of sight to the transmitter. This means that mobile phone companies need to have many transmitter towers if they're going to attract customers. Microwaves are also used by fixed traffic speed camerasand for radarwhich is used by aircraft, ships and weather forcasters.
The most common type of radar works by sending out bursts of microwaves, detecting the "echoes" coming back from the objects they hit, and using the time it takes for the echoes to come back to work out how far away the object is. Prolonged exposure to significant levels of microwaves is known to cause " cataracts " in your eyes, which is a clouding of the lens preventing you from seeing clearly if at all!
So don't make a habit of pressing your face against the microwave oven door to see if your food's ready! People who work on aircraft carrier decks wear special suits which reflect microwaves, to avoid being "cooked" by the powerful radar units in modern military planes.
But that's to guard against powerful radar - not mobile phones or wifi. Some research in the past has indicated that the small doses of microwaves from mobile phones might affect parts of your brain - after all, you're holding the transmitter right by your head.
Other research is inconclusive, although there is a feeling that you're more vulnerable if you're young and your brain is still growing.
So the advice was to keep calls short. That's right - we're supposed to advise teenagers not to spend too long on the phone. What could possibly go wrong with a plan like that?
What are the Hazards of Electromagnetic Radiation?
So should I worry about using my mobile phone? Not really. See this Guardian article February - recent research shows no evidence that the low levels of microwaves from phones and wifi causes any health issues. How they're made. Microwaves cause water and fat molecules to vibrate, which makes the substances hot.It's also fun when your students come up with their own! In this activity, students will create an EM Spectrum chart. They should include the uses and dangers of each type of radiation, and can create their own mnemonic.
Students can use the chart they created as review, and this activity can be completed at the beginning or the end of a unit. This activity can easily be differentiated and modified for your students by removing rows and deleting or adding information.
Cut up the example chart and get your students to put it together like a jigsaw puzzle.
Alternatively, have a student or small group complete a column each, then combine the columns to make a complete spectrum. You may also choose to have students write the wavelength and frequency ranges in the chart, although this can be difficult because often the different radiation parts overlap, and students may find that the numbers found for the ranges vary from website to website.
These instructions are completely customizable. Modify this basic rubric by clicking the link below. You can also create your own on Quick Rubric.
Each version of Storyboard That has a different privacy and security model that is tailored for the expected usage.
All storyboards are public and can be viewed and copied by anyone. They will also appear in Google search results. The author can choose to leave the storyboard public or mark it as Unlisted. Unlisted storyboards can be shared via a link, but otherwise will remain hidden.Como saber si un hombre no te ama
All storyboards and images are private and secure. No one else can view anything. Teachers may opt to lower the security if they want to allow sharing. All storyboards are private and secure to the portal using enterprise-class file security hosted by Microsoft Azure.
Within the portal, all users can view and copy all storyboards. This pricing structure is only available to academic institutions. Storyboard That accepts purchase orders.The Dangers of Electromagnetic Waves - 9-1 GCSE Physics - OCR, AQA, Edexcel
Start My Trial. Learn More. Questions About Remote Learning? Click Here. EM Spectrum Chart. More options. Start my free trial.The dangers of electromagnetic radiation are becoming very evident and associated with many diseases and health problems. Some say it is scientifically impossible for electromagnetic radiation EMR to affect us. Some studies prove the cell damage EMF causes. Electromagnetic radiation gave me cancer, within three weeks of exposure to a very strong field, and electromagnetic hypersensitivity EHS.
Though my cancer is now gone, every exposure to electric, magnetic, wireless or ionizing radiation causes my old cancer spots to ache and 'feel sick' again - instantly depending on the strength of the exposure. Over a two year period, I reduced, eliminated and regained various cancers several times because of EMF radiation in my environment.
As I felt the EMF radiation turning my tissue into unhealthy tissue, my tests would prove the cancer was back or had grown. When I reduced the radiation exposure drastically, discharged each exposure and repaired and eliminated the damaged cells, my test would show exactly what I felt - the cancer was gone or almost gone.
God gave me this clear picture of the harm of EMF and then taught me what to do to keep myself safe and to heal the damage. This website provides you with the information you need for EMF protection so you don't have to go through what I did. And if you are already there - I can help you to have the most normal life possible in a world maxed out with EMF radiation.
Excessive EMF radiation can change your life forever! It can take many years or just one strong exposure. The following list represents diseases and health problems that are either a direct result of electromagnetic radiation poisoning or are closely associated with it. Keep in mind that all health issues will be affected to some degree by exposure to EMF radiation, whether electric, magnetic, wireless or ionizing radiation, since it weakens the immune system, stresses the body and damages healthy cells.
Here are some of the factors that encourage a faster or stronger reaction to EMF exposures.Maikling elehiya
One or more single incident of very strong exposure Having other pre-existing health problems. I have dealt with many clients having major health problems who were in high EMF radiation levels on a regular basis and found they could not get better until they drastically reduced the high electromagnetic radiation from their environment.
In summary, the dangers of electromagnetic radiation are a major factor in many diseases and health problems.Movie 21 mph
Testing the radiation in your environment is the only way to know what levels you are exposed to. More about detectors that measure EMF radiation in your environment here.
Consider high EMF radiation exposures as a possible fibromyalgia cause, a source of daily headaches, as what causes lyme disease to become symptomatic, one cause of leukemia, and brain cancer should always be considered as one of the dangers of cell phones.
For many with the above health problems, drastically reducing high EMF radiation levels in your environment, adding some important supplements for protection from EMF, and then correcting your body's natural electromagnetic fields Click here for best way to correct EMF's may be all you need to be on the road to recovery.
All Rights Reserved. No reproduction permitted without permission. The contents of this website are not intended to provide personal medical advice. Statements are not approved by the FDA. Most information is backed by clinical studies.
I Was the Study! Associated EMF Health Problems The following list represents diseases and health problems that are either a direct result of electromagnetic radiation poisoning or are closely associated with it. One or more single incident of very strong exposure Having other pre-existing health problems In summary I have dealt with many clients having major health problems who were in high EMF radiation levels on a regular basis and found they could not get better until they drastically reduced the high electromagnetic radiation from their environment.
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