magnetic monopole
Học thuậtThân thiện
Definition
Noun: A theoretical, point-like particle that possesses only one magnetic pole—either a north magnetic pole or a south magnetic pole—in contrast to all known magnets, which always have both poles as a dipole.
Usage
The term is used almost exclusively in theoretical physics and discussions of particle physics to describe a hypothetical entity predicted by some theories. - The existence of a magnetic monopole would require a reformulation of Maxwell's equations of electromagnetism. - Scientists have searched for evidence of a magnetic monopole in cosmic rays and particle accelerator experiments.
Advanced Usage
- Grand Unified Theories (GUTs): Many Grand Unified Theories predict the existence of very massive magnetic monopoles as topological defects in the early universe.
- If magnetic monopoles were created in the early universe, they would be incredibly rare and massive.
- Dirac's Quantization Condition: Physicist Paul Dirac showed that the existence of even a single magnetic monopole could explain the quantization of electric charge.
- Dirac's argument provided a compelling theoretical reason to consider the magnetic monopole.
Variants and Related Words
- Monopole (noun): Often used as a shortened form in technical contexts.
- The search for a monopole continues.
- Dyons (noun): Hypothetical particles that carry both electric and magnetic charge, a more general concept than a pure magnetic monopole.
Synonyms
- Isolated magnetic pole: A descriptive synonym emphasizing the single-pole characteristic.
Related Concepts (Not Phrasal Verbs or Idioms)
- Magnetic dipole: The standard two-pole configuration of all known magnets, which is the opposite of a monopole.
- Gauss's law for magnetism: One of Maxwell's equations that states the magnetic flux through a closed surface is zero, which would be modified if magnetic monopoles existed.
Noun
- a hypothetical particle with a single magnetic pole instead of the usual two