is it dangerous to be exposed to radio frequency?
361295
yes.\ndo you smoke, if so don't worry about the radio frequency.\n\nradio means energy is radiated\nyou have an increased risk of leukeamia\n\nbut the reality is that we are all exposed to large amounts of radio energy, and I mean LARGE.\n\npersonally, if i were you i would be more worried about the glue. the carcinogens that come out of that stuff... man. Have you read the material data safety sheets (M.S.D.S.) on the glue that you use? do a search on the net for the MSDS for the glues and you may not be so concerned about the radiation. Formaledyde is great stuff
868251
Radio waves are a form of electromagnetic radiation, created whenever a charged object (in normal radio transmission, an electron) accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum. In radio, this acceleration is caused by an alternating current in an antenna. Radio frequencies occupy the range from a few tens of hertz to three hundred gigahertz, although commercially important uses of radio use only a small part of this spectrum.[1]\n\nElectromagnetic radio spectrum \n\nOther types of electromagnetic radiation, with frequencies above the RF range, are microwave, infrared, visible light, ultraviolet, X-rays and gamma rays. Since the energy of an individual photon of radio frequency is too low to remove an electron from an atom, radio waves are classified as non-ionizing radiation.\n\nMobile phones and the network they operate under vary significantly from provider to provider, and even from nation to nation. However, all of them communicate through electromagnetic radio waves with a cell site base station
550137
It depends on the conductivity of the metal and how long they're connected to each other.  If you hook them up with one small wire, the wire will get hot and possibly burn after some time.  However, if you do it for a very short time, it won't be a big deal.  It's not good for the battery, sure, but it won't kill you.\n\nHere's a mildly interesting experiment.  Tune your AM/FM radio to any frequency.  Take a 9V battery and a nickel (or quarter) and tap the battery so the nickel touches both leads.  You'll hear your taps on the radio.  Explanation of this can be found in the link below.
651263
physical injury could be, it might break upon you during disaster type situations, other risks include radiation which will affect your heart function
854524
Radio frequency, or RF, refers to that portion of the electromagnetic spectrum in which electromagnetic waves can be generated by alternating current fed to an antenna
803826
Very very dangerous. Potentially fatal.
994451
Ive never really heard about infrared causing any health problems, but at the same time, it is radiation coming from those little things (miniscule if im not mistaken). I think you'll be ok as long as your not like, pointing the remote control at your eye and pressing the button day or night.
584044
it doesn't sound safe. I don't even know what it is. But if you have to ask, the answer is no.\n\nhuffing kills your brain.
348781
mobile phones use the spectrum below the visible wave length  (  and below IR  ) . those frequencies have low energy typically (though MW is used for cooking...) and are not considered of the ionizing radiation type, which is on the other side of the spectrum ( above UV ). For example: X rays, Gamma rays, etc'...which are definitely dangerous. Nonetheless I'd use a cautious approach and common logic when using any radiating device which has only been around for a few years . if there are negative effects we shall see them years from now on the "heavy users" of cell phones...\nanother issue is that those tumors i guess you're referring to occur because of DNA braking up during transcription by exposure to ionizing radiations ( which has a short enough wave-length ) , that could most definitely NOT occur with your cell phone!\n\nso my answer is - NOT LIKELY.
167673
you can only run so many things on soo many frequencies, if everything was wireless we would all have brain cancer from the emi and everything would interfere, just like when your cell phone goes off and it makes your computer screen twitch
784387
no for patient \nmri is a imageing system with oltrasound and magnetic wave \n\nit is posible harmful for staff and oprator for long time working with this equipment  but you have few mili second wave \nand not harmful for you
632113
Nonionizing radiation is electromagnetic radiation that includes: \n\nRadio waves \nMicrowaves \nInfrared light \nVisible light \nHazards of Nonionizing Radiation\n\nUnlike ionizing radiation, nonionizing radiation does not have enough photon energy to remove an electron from an atom. However, it can still be hazardous. For example: \n\nPowerful industrial lasers, which emit tightly focused or coherent beams of visible light, can burn through human tissue and even metal. \nSome nonionizing radiation can interfere with the operation of heart pacemakers and other medical devices, as well as critical equipment in aircraft. \nHigh levels of radio frequency and microwave radiation can heat tissue and if the temperature increase is high enough, can adversely affect health. \nElectric and Magnetic Fields\nExtremely low-frequency electric and magnetic fields (EMFs) surround electrical machinery, home appliances, electric wiring, and high-voltage electrical transmission lines and transformers. (Figure 11) \n\nA good deal of public and government attention has been focused in recent years on the possible health effects of EMFs. The public is exposed to these fields through the generation, transmission, and use of electric power. The National Institute of Environmental Health Sciences (NIEHS), a branch of the National Institutes of Health (NIH), has compiled information on this issue. (You can get more information on this and other issues from the NIEHS Web site http://www.niehs.nih.gov/emfrapid) \n\nHigh-voltage power transmission and distribution lines have been a major focus of concern. Alternating-current (AC) electricity, with a frequency of 60 cycles per second, falls into the extremely low frequency range on the electromagnetic spectrum and thus has far too little energy to cause ionization. \n\nHowever, AC electric and magnetic fields can induce electric currents in conducting materials, including human and animal tissue. (Direct-current fields, such as the Earth's magnetic field, do not have this effect). The electric current induced in our bodies may have potential biological and health effects. \n\nEvidence of health effects from EMF is inconclusive, although some studies have indicated a possible link between EMFs and childhood leukemia and other forms of cancer. The information available, however, is not sufficient to establish a cause-effect relationship. \n\nSome studies have reported the possibility of increased cancer risks, especially leukemia and brain cancer, for electrical workers and others whose jobs require them to be around electrical equipment. Additional risk factors, however, such as exposure to cancer-initiating agents, may also be involved. \n\nSome researchers have looked at possible associations between EMF exposure and breast cancer, miscarriages, depression, suicides, Alzheimer's disease, and Amyotrophic Lateral Sclerosis (ALS, or Lou Gehrig's Disease), but the general scientific consensus is that the evidence is not yet conclusive. \n\nIn June of 1998, a special review panel convened by the NIEHS reviewed EMF health studies. A majority of the panel found "limited evidence that residential exposure to extremely low frequency magnetic fields may increase the risk of childhood leukemia." A majority also found limited evidence that workplace exposure to EMFs may cause chronic lymphocytic leukemia in adults. \n\nAccording to NIEHS, "the probability that EMF exposure is truly a health hazard is currently small. The weak epidemiological associations and lack of any laboratory support for these associations provide only marginal scientific support that exposure to this agent is causing any degree of harm." The NIEHS did conclude, however, in its 1999 Report to Congress, that extremely-low-frequency EMF exposure cannot be recognized as entirely safe because of weak scientific evidence that exposure may pose a leukemia hazard; the associations reported for childhood leukemia and ad
1061136
Simply because microwave radiations impart energy to atoms and molecules in the crystal structure. Materials which can withstand the induced extra energy are safe, others are not.
1047940
Not sure yet but there is new evidense.\nSee article.\nhttp://dsc.discovery.com/news/briefs/20060522/cellphonesexcite_hea_zoom0.html\n\nCell phones use VERY LOW power, but people have been killed by TV and Radio Transmitters, and I have been personally been zaped by a radio transmitting antenna.\nPlease remember a microwave oven IS A MICROWAVE RADIO, with the radio waves contained in a metal box. I would not want to over ride the safety switch and turn it on with my head in it!!!\nCell Phones are such a low power I would not really worry, BUT If I had children I would not allow them to use one except in emerginces or no more than 5-minutes a month. Their brains and bodies are still developming and IF there is a danger it wont show up till their in their forties. \nWould you let your kids smoke? We know smoking is dangerous, IF they only smoked from age 5 to 10 years old any ILL affects wont show up till they turn forty or so.\nI'm just saying here that I dont believe enough studies have been done and the affects of cell phones have not been studied long enough only because there so new. No long term use has been studied, or the affects on developing minds.\nI have been a Certified Electronic Repair Tech. sence 1974
52899
For exemple when u put your cell phone between ur legs, \nwhenever the cell phone rings it transmit electromagnetic fields into ur genitals, they can damage the dna chains inside ur reproductive cells (spermatozoid)
1156885
They emit RF, the higher the frequency the more harmful the RF generally speaking. cell phones are in the 900mhz-1.8ghz range which given more power would be very harmful to the soft tissues of the human body. Cell phones do not put out enough power to be harmful as required by law in the FCC type acceptance for your specific phone. The FCC has set exposure limits on all emission devices which is also why some devices or radios are limited to occupational use only, as their emissions over time could be harmful. A PCS cell phone that put out 1000watts would be the same as sticking your head in a microwave which is why they generally only put out a quarter watt. Pbmao is incorrect in his summary of only infrared freq range is dangerous. Any frequency range given enough power can be dangerous. I have had a hole burned through my hand with a 900mhz radio putting out 500 watts. Stand between two subwoofers at 10hz and 10,000 watts and see what happens to your ear drums. Everything around you even the light that you see resonates or is a resonating frequency the spectrum starts off at sounds you can not even hear, to the electricity in your walls, to the light your eyes detects to see the world around you.
330278
Electricity is a form of energy that can be transmitted efficiently through copper wires because it is a good conductor. To transmit the same electricity through air, you will need very high voltage as air has a high resistance. Additionally, the efficiency will also be reduced as there may be arcing. High voltage is also dangerous.\n\nHowever, when we send a Radio Wave, it is also a form of energy. In the early days of Radio, there is a circuit that is popular with Radio enthusiasts called the Crystal Radio. The Crystal Radio does not need a battery to power it. It uses the Radio Signals itself. With some innovative design, one can tap into the Radio waves and convert that into electrical energy. This is a form of wireless electricity. However, the power level is very low.\n\nSo potentially, it is possible but there are probably many challenges ahead. Today, it is still not viable but we never can tell, technology has always done the impossible.\n\nFor very short range, electricity may be wirelessly  transmitted via induction (magnetic fields). Some pace makers are recharged via induction.