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Electromagnetic shielding. Electromagnetic shielding cages inside a disassembled mobile phone. In electrical engineering, electromagnetic shielding is the practice of reducing or redirecting the electromagnetic field (EMF) in a space with barriers made of conductive or magnetic materials. It is typically applied to enclosures, for isolating ...
The U.S. Committee of the Blue Shield (USCBS), founded in 2006, is the United States national committee of the Blue Shield.The Blue Shield was formed according to the provisions of the 1954 Hague Convention for the Protection of Cultural Property in the Event of Armed Conflict, which specifies a symbol of a blue shield for marking protected cultural property.
Website. www .bcbs .com. Blue Cross Blue Shield Association, also known as BCBS, BCBSA, or The Blues, is a United States -based federation with 34 independent and locally-operated BCBSA companies that provide health insurance in the United States to more than 115 million people as of 2022. [ 2][ 3] It was formed in 1982 from the merger of its ...
The World Health Organization (WHO) have used ELF to refer to the concept of "extremely low frequency (ELF) electric and magnetic fields (EMF)". [17] The WHO also stated that at frequencies between 0 and 300 Hz, "the wavelengths in air are very long (6,000 km (3,700 mi) at 50 Hz and 5,000 km (3,100 mi) at 60 Hz), and, in practical situations ...
Since at least the 1990s, scientists have researched whether the now-ubiquitous radiation associated with mobile phone antennas or cell phone towers is affecting human health. [1] Mobile phone networks use various bands of RF radiation, some of which overlap with the microwave range. Other digital wireless systems, such as data communication ...
The Blue Shield, formerly the International Committee of the Blue Shield, is an international organization founded in 1996 to protect the world's cultural heritage from threats such as armed conflict and natural disasters. [1] Originally intended as the "cultural equivalent of the Red Cross ", [2] [3] its name derives from the blue shield ...
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