1/20/2024 0 Comments Electromagnetic spectrum![]() ![]() Microwaves do not use x-rays or gamma rays, and they do not make food radioactive. When food absorbs microwaves, it causes the water molecules in the food to vibrate, which produces heat. Microwave ovens work by using very high levels of a certain frequency of RF radiation (in the microwave spectrum) to heat foods. Some common uses of RF radiation Microwave ovens They come from radio and TV broadcasts, Wi-Fi and Bluetooth devices, cell phones (and cell phone towers), and other sources. Most people are exposed to lower levels of RF radiation every day, from RF signals all around us. Other people who may have higher levels of RF exposure include some healthcare workers (particularly those working near MRI scanners) and people who work with devices that use RF radiation, such as plastic sealers, certain types of welding equipment, and induction heaters. This includes people who maintain antenna towers that broadcast communication signals and people who use or maintain radar equipment. Some people can have significant RF exposure as part of their jobs. Millimeter wave scanners (a type of full body scanner used for security screening).“Welding” pieces of polyvinyl chloride (PVC) using certain machines.Some medical procedures, such as radiofrequency ablation (using heat to destroy tumors).Wi-Fi, Bluetooth ® devices, and smart meters.Transmitting signals from cordless telephones, cell phones and cell phone towers, satellite phones, and 2-way radios.Broadcasting radio and television signals.The earth itself – most radiation from the earth is infrared, but a tiny fraction is RF.People can be exposed to RF radiation from both natural and human-made sources. Although RF radiation is not thought to cause cancer by damaging the DNA in cells the way ionizing radiation does, there has been concern that in some circumstances, some forms of non-ionizing radiation might still have other effects on cells that might somehow lead to cancer. This can lead to burns and body tissue damage. If RF radiation is absorbed by the body in large enough amounts, it can produce heat. RF radiation has lower energy than some other types of non-ionizing radiation, like infrared and visible light, but it has higher energy than extremely low-frequency (ELF) radiation. Non-ionizing radiation does not have enough energy to remove electrons from an atom. Radiofrequency (RF) radiation, which includes radio waves and microwaves, is at the low-energy end of the electromagnetic spectrum. This can damage the DNA (genes) inside of cells, which can sometimes lead to cancer. These rays, as well as some higher energy ultraviolet (UV) rays, are forms of ionizing radiation, which means they have enough energy to remove an electron from (ionize) an atom. ![]() It ranges from extremely low frequencies (such as those from power lines) to extremely high frequencies (x-rays and gamma rays), and it includes both non-ionizing and ionizing radiation.Įxamples of high-energy radiation include x-rays and gamma rays. The electromagnetic spectrum illustration below shows the possible frequencies of electromagnetic energy. This is sometimes referred to as the electromagnetic spectrum. Radiation exists across a spectrum from very low-energy (low-frequency) radiation to very high-energy (high-frequency) radiation. But there are other types of radiation that act differently. When talking about radiation and cancer, many people think of specific kinds of radiation such as x-rays or the radiation made by nuclear reactors. X-rays are one example of radiation, but so is the light that comes from the sun and the heat that constantly comes off our bodies. Radiation is the emission (sending out) of energy from any source. ![]()
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