electromagnetic
ih-lek-troh-mag-NET-ik
/ɪˌlɛktrəʊmæɡˈnɛtɪk/
Relating to or caused by the combined forces and interactions of electric currents and magnetic fields.
Describes physical phenomena where electric and magnetic vectors couple together, as in light waves or radiation.
The story behind the word. Coined in the early 19th century after Hans Christian Ørsted discovered that an electric current deflects a compass needle, proving that electrical and magnetic forces are unified.
Word relationships
- galvanomagnetic: Refers specifically to thermal and electrical effects resulting from magnetic fields acting on currents.
- nonelectrical: Lacking any electrical or magnetic characteristics.
Commonly confused with
- electrostatic: Electrostatic involves stationary charges, whereas electromagnetic involves interacting electric and magnetic fields in motion.
Word family
- electromagnetism (noun): The branch of physics dealing with electricity and magnetism.
- electromagnetically (adverb): In an electromagnetic manner.
Collocations
- electromagnetic spectrum
- electromagnetic radiation
- electromagnetic field
- electromagnetic force
Example sentences
- "Light itself is an electromagnetic wave propagated through oscillating electric and magnetic vectors." Physics textbook describing light waves
- "MRI scanners rely on powerful electromagnetic fields to produce detailed imaging of internal tissue." Medical technology reference
Memory hook
Think of ELECTRIC spark meeting a MAGNET; together they form ELECTROMAGNETIC energy. Electric + Magnetic = Light and Radiation.
When not to use
Do not use to describe purely electrostatic charges that lack moving charges or magnetic fields.
Fun facts
- James Clerk Maxwell unified electricity, magnetism, and optics in 1865 by proving light is an electromagnetic wave.
Related words
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