Smartphones carried by most people depend on cell site or cell tower for their operation. A cell site or cell tower is a cellular telephone site where antennae and electronic communications equipment are placed — typically on a radio mast, tower, or other raised structure — to create a cell …
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Radio frequency waves (RF) are electromagnetic waves between the frequencies of 3 kilohertz to 300 gigahertz, used in radio, cellphones, wi-fi, radar, GPS, and many other systems. While humans have used RF technology to communicate for over 100 years, no living organism has ever been observed using RF to communicate …
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The US Navy’s $35+ billion “Littoral Combat Ship” program is intended to create a new generation of affordable surface combatants that could operate in dangerous shallow and near-shore environments, while remaining affordable and capable throughout their lifetimes. The littoral combat ship is a modular, reconfigurable ship, with three mission packages …
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