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  2. Electromagnetic shielding - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_shielding

    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 ...

  3. United States National Radio Quiet Zone - Wikipedia

    en.wikipedia.org/wiki/United_States_National...

    The National Radio Quiet Zone ( NRQZ) is a large area of land in the United States designated as a radio quiet zone, in which radio transmissions are restricted by law to facilitate scientific research and the gathering of military intelligence. About half of the zone is located in the Blue Ridge Mountains of west-central Virginia while the ...

  4. Earth's magnetic field - Wikipedia

    en.wikipedia.org/wiki/Earth's_magnetic_field

    The Earth and most of the planets in the Solar System, as well as the Sun and other stars, all generate magnetic fields through the motion of electrically conducting fluids. [54] The Earth's field originates in its core. This is a region of iron alloys extending to about 3400 km (the radius of the Earth is 6370 km).

  5. Blue Cross Blue Shield Association - Wikipedia

    en.wikipedia.org/wiki/Blue_Cross_Blue_Shield...

    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 ...

  6. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  7. Red states and blue states - Wikipedia

    en.wikipedia.org/wiki/Red_states_and_blue_states

    Map based on last Senate election in each state as of 2024. Starting with the 2000 United States presidential election, the terms "red state" and "blue state" have referred to US states whose voters vote predominantly for one party—the Republican Party in red states and the Democratic Party in blue states—in presidential and other statewide elections.

  8. Blue Shield of California - Wikipedia

    en.wikipedia.org/wiki/Blue_Shield_of_California

    Blue Shield of California is a mutual benefit corporation and health plan [ 6 ][ 7 ] founded in 1939 by the California Medical Association. It is based in Oakland, California, and serves 4.5 million health plan members and more than 65,000 physicians across the state. Blue Shield of California was founded as a not-for-profit organization.

  9. U.S. Route shield - Wikipedia

    en.wikipedia.org/wiki/U.S._Route_shield

    The U.S. Route shield is the highway marker used for United States Numbered Highways. Since the first U.S. Route signs were installed in 1926, the general idea has remained the same, but many changes have been made in the details. Originally, the shield included the name of the state in which the sign was erected and the letters "U S" on a ...

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