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Electromagnet Meaning: Definition, Examples, and Translations

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electromagnet

[ɪˌlɛktrəʊˈmæg.nɪt ]

Definition

Context #1 | Noun

physical device

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Unlike permanent magnets, the magnetism of an electromagnet can be turned on and off by controlling the current. They are widely used in various devices such as electric motors, generators, and magnetic locks.

Synonyms

electric magnet, magnetic coil.

Examples of usage

  • The crane lifted the scrap metal using an electromagnet.
  • Electromagnets are essential components in MRI machines.
  • A simple electromagnet can be made using a wire and a battery.

Translations

To see the translation, please select a language from the options available.

Interesting Facts

Science

  • This kind of magnet can become very powerful, allowing it to lift heavy objects like cars or metal scraps.
  • Electromagnets are used in MRI machines, helping doctors look inside our bodies without surgery.

Technology

  • In many electronic devices, electromagnets are essential for operating speakers, hard drives, and motors.
  • Maglev trains (magnetic levitation) use powerful electromagnets to float above the tracks, reducing friction and allowing high-speed travel.

History

  • In the early 1800s, researchers like Hans Christian Ørsted discovered the relationship between electricity and magnetism.
  • The first practical electromagnet was built by William Sturgeon in 1824, paving the way for future inventions.

Everyday Life

  • You can find small electromagnets in simple toys where they help move pieces around like in magnetic games.
  • Many locks, like those in some doors and safes, use electromagnets to keep them secured until electricity is applied.

Origin of 'electromagnet'

Main points about word origin

  • The term comes from 'electro-' meaning electric and 'magnet' referring to magnets used to attract metals.
  • First used in scientific texts around the early 19th century as electrical experiments became more common.

The word 'electromagnet' arises from the combination of two roots: 'electro-', which refers to electricity, and 'magnet', pertaining to magnetism. The term began to emerge in the early 19th century as scientists like Hans Christian Ørsted and Michael Faraday explored the relationship between electricity and magnetism. Ørsted's discovery of the deflection of a compass needle by an electric current set the stage for future experiments. Faraday's work on electromagnetic induction demonstrated how a changing magnetic field could generate an electric current, confirming the interlinkage of the two phenomena. By the mid-1800s, the practical applications of electromagnets became evident as they were used in telegraphs and electric motors, paving the way for modern electrical engineering and technology advancements.

Word Frequency Rank

Positioned at #23,558, this word is part of extensive vocabulary. It's relatively rare in general usage but may be important in specific fields or formal writing.