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  2. Koozie - Wikipedia

    en.wikipedia.org/wiki/Koozie

    The name "Koozie", with a capital "K", is a federally registered trademark in the United States, [ 1] originally coined by Bob Autrey of San Antonio, Texas, and rights later sold to Radio Cap Corporation (RCC) as the KOOZIE in the early 1980s. The company RCC specialized in baseball caps before registering a trademark for the name KOOZIE in ...

  3. Force between magnets - Wikipedia

    en.wikipedia.org/wiki/Force_between_magnets

    Force between magnets. Magnets exert forces and torques on each other through the interaction of their magnetic fields. The forces of attraction and repulsion are a result of these interactions. The magnetic field of each magnet is due to microscopic currents of electrically charged electrons orbiting nuclei and the intrinsic magnetism of ...

  4. Electromagnetic coil - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_coil

    Electromagnetic coil. The magnetic field lines (green) of a current-carrying loop of wire pass through the center of the loop, concentrating the field there. An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil ( spiral or helix ). [ 1][ 2] Electromagnetic coils are used in electrical engineering, in ...

  5. Magnetic monopole - Wikipedia

    en.wikipedia.org/wiki/Magnetic_monopole

    A magnetic monopole, if it exists, would have the defining property of producing a magnetic field whose monopole term is non-zero. A magnetic dipole is something whose magnetic field is predominantly or exactly described by the magnetic dipole term of the multipole expansion. The term dipole means two poles, corresponding to the fact that a ...

  6. Helmholtz coil - Wikipedia

    en.wikipedia.org/wiki/Helmholtz_coil

    Helmholtz coil. A Helmholtz coil is a device for producing a region of nearly uniform magnetic field, named after the German physicist Hermann von Helmholtz. It consists of two electromagnets on the same axis, carrying an equal electric current in the same direction. Besides creating magnetic fields, Helmholtz coils are also used in scientific ...

  7. Faraday's law of induction - Wikipedia

    en.wikipedia.org/wiki/Faraday's_law_of_induction

    Faraday's law states that the emf is also given by the rate of change of the magnetic flux: where is the electromotive force (emf) and ΦB is the magnetic flux . The direction of the electromotive force is given by Lenz's law . The laws of induction of electric currents in mathematical form was established by Franz Ernst Neumann in 1845.

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