Electromagnet: meaning, definitions and examples

Etymology

• 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.

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.

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.

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