The "lev" part depends on like poles repelling.
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Yes, they have already built trains which are held above the track by magnetic fields, they are called Maglev trains(magnet levitation).
Magnetic levitation trains are designed and built around the use of magnetic force to levitate and propel the trains forward, allowing for faster, more economical mass transportation.
(Electro) magnetism. magnetic attraction and repulsion.
The Domino Theory was the driving force behind the Kennedy administrations actions in Vietnam.
it is the theory of attraction and repulsion. the railroad is repulsion while the line in which the maglev train is on is a different magnetic wave equivalent to attraction
The Domino Theory
Magnetic force is used in MRI machines to produce detailed images of internal body structures. Electric motors and generators utilize magnetic force to convert electrical energy into mechanical motion or vice versa. Magnetic levitation trains use magnetic force to hover above the track and reduce friction, allowing for high-speed transportation.
Magnetic force is used in a variety of applications, such as MRI machines for medical imaging, electric motors for generating motion, and in compasses for navigation. It plays a crucial role in generating electricity in generators and is also utilized in magnetic levitation trains for transportation.
In quantum field theory (QFT), the carrier particle of the magnetic force is the photon. Photons are virtual particles that mediate the electromagnetic interaction between charged particles, including the magnetic force between magnets or moving charges.
Magnetic force is used in various applications such as MRI machines for medical imaging, electric motors for converting electrical energy to mechanical energy, and magnetic storage devices like hard drives for storing digital data. Additionally, it is used in compasses for navigation and in magnetic levitation trains for transportation.
Gerald E. Marsh has written: 'Force-Free Magnetic Fields' -- subject(s): Hydrodynamics, Topology, Force-free magnetic fields, Cosmic magnetic fields, Field theory (Physics)