Wi-Fi makes your life easier. You can get online from a coffee shop or from your living room. You are not tethered to a big computer that is physically linked to the Internet.
But that convenience comes at a price. Wireless routers — as well as Bluetooth and similar wireless systems — give off electromagnetic radiation in the low-gigahertz frequency. This level is considered potentially dangerous to people. And the danger is compounded by several factors:. No worries. Enjoy your radio station, Wi-Fi hotspot, and delicious microwaved Hot Pockets. Short wavelengths? Microwaves are bad, they make things very hot and they could burn you! You would not want to build a human size microwave oven and stand inside it.
Nor would you particularly enjoy being the target of the crowd-dispersing microwave cannons built and deployed by the U. In those cases, however, there are two important things to note.
The person exposed to the non-ionizing microwave radiation would be exposed to a very high power dose at a very close range. The magnetron in your average consumer microwave produces about watts of microwave energy, and that microwave discharge is safely contained within the body of the microwave thanks to proper shielding. By comparison, even a very powerful high-end Wi-Fi router only produces around 1 watt of microwave energy and, unlike the magnetron in a microwave oven, a Wi-Fi router radiates that minuscule 1 watt of power in a bubble-like-cloud around the router.
Not only are these devices of radically different operating powers, but they are equally at the mercy of the Inverse-square law. In the illustration above, you can see how the further the given area A is from the source of the radiation S , the less exposure it receives.
This law applies to radio, microwaves, visible light, and all manner of waves we experience around us in the natural world. Because of this physical law, even if holding a Wi-Fi router directly against your forehead was very dangerous and, we assure you, it is not working in your home office 45 feet away from the Wi-Fi router would not be dangerous simply because the microwave radiation of the already minuscule 1 watt Wi-Fi router would have radically decreased in intensity.
When you factor in that the Wi-Fi radiation is already harmless, you see that there is no situation in which the Wi-Fi signal from your router, your laptop, your media center, or any other Wi-Fi device in your home could possibly hurt you. Use Google Fonts in Word. Use FaceTime on Android Signal vs. Customize the Taskbar in Windows What Is svchost. Best Smartwatches. Best Gaming Laptops. Best Smart Displays. Best Home Security Systems. Best External Solid State Drives.
Best Portable Chargers. Best Phone Chargers. Best Wi-Fi Range Extenders. Best Oculus Quest 2 Accessories. Best iPad Air Cases. Awesome PC Accessories. For wireless devices intended for use near or against the body such as cell phones, tablets and other portable devices operating at or below 6 GHz, these guidelines specify exposure limits in terms of Specific Absorption Rate SAR.
For wireless devices operating in the frequency range above 6 GHz, the guidelines specify power density as the relevant RF exposure limit. Power density is defined as an amount of RF power per unit area.
Existing power density limits apply for whole-body exposure, but power density limits for localized exposure are being considered see the Notice of Proposed Rulemaking in ET Docket No. If the FCC learns that a device does not conform with the test report upon which FCC approval is based — in essence, if the device in stores is not the device the FCC approved — the FCC can withdraw its approval and pursue enforcement action against the appropriate party.
For more information on device testing and SAR for cell phones, go to fcc. Several US government agencies and international organizations work cooperatively to monitor research on the health effects of RF exposure. According to the FDA and the World Health Organization WHO , among other organizations, to date, there is no consistent or credible scientific evidence of health problems caused by the exposure to radio frequency energy emitted by cell phones.
For more information on the IEFP, go to who. Some health and safety interest groups have interpreted certain reports to suggest that wireless device use may be linked to cancer and other illnesses, posing potentially greater risks for children than adults. While these assertions have gained increased public attention, currently no scientific evidence establishes a causal link between wireless device use and cancer or other illnesses. Those evaluating the potential risks of using wireless devices agree that more and longer-term studies should explore whether there is a better basis for RF safety standards than is currently used.
The FCC closely monitors all of these study results.
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