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A mobile phone connects to the telephone network by radio waves exchanged with a local antenna and automated transceiver called a cellular base station (cell site or cell tower). The service area served by each provider is divided into small geographical areas called cells , and all the phones in a cell communicate with that cell's antenna.
In June 2020, Twitter started placing fact checking labels on tweets about 5G and COVID-19. [34] Facebook has removed several posts with false claims of associations between 5G and COVID-19. [8] A 2020 study recommends that denunciation of the 5G and COVID-19 theory from a world leader would have helped in mitigating the spread of misinformation.
A conspiracy theory linking the novel coronavirus to 5G infrastructure has led some people in the U.K. to burn cell towers.
Section 704 of the Telecommunications Act of 1996 prohibits states and local governments from regulating cell towers on the basis of the environmental effects of radio frequency radiation. The questions brought to the Supreme Court were (1) whether Section 704 violates the First Amendment right of access to courts, and (2) whether ...
COVID-19 simulation models are mathematical infectious disease models for the spread of COVID-19. [1] The list should not be confused with COVID-19 apps used mainly for digital contact tracing . Note that some of the applications listed are website-only models or simulators, and some of those rely on (or use) real-time data from other sources.
The FCC guide "Specific Absorption Rate (SAR) For Cell Phones: What It Means For You", after detailing the limitations of SAR values, offers the following "bottom line" editorial: ALL cell phones must meet the FCC’s RF exposure standard, which is set at a level well below that at which laboratory testing indicates, and medical and biological ...
[3] [4] Low-band cell towers have a range and coverage area similar to 4G towers. Mid-band 5G uses microwaves of 1.7–4.7 GHz, allowing speeds of 100–900 Mbit/s, with each cell tower providing service up to several kilometers in radius. This level of service is the most widely deployed, and was deployed in many metropolitan areas in 2020.
English: Radiation Dose Chart by Randall Munroe as part of the webcomic xkcd (SVG version of ). In response to concerns about the radioactivity released by the Fukushima Daiichi nuclear disaster:Fukushima Daiichi nuclear disaster in 2011, and to remedy what he described as "confusing" reporting on radiation levels in the media, Munroe created a chart of comparative radiation exposure levels.