English · Science & Technology
electromagnetic spectrum
/ɪˌlɛk.trəʊ.mæɡˈnɛt.ɪk ˈspɛk.trəm/
[/ɪˌlɛk.trəʊ.mæɡˈnɛt.ɪk ˈspɛk.trəm/]
range of radiation types
Advancednoun
Definition
The full range of electromagnetic waves, from radio waves to visible light to gamma rays.
Example
Visible light is only a small part of the vast electromagnetic spectrum surrounding us every day.
Visible light is only a small part of the vast electromagnetic spectrum surrounding us every day.
Etymology
Combining 'electromagnetic' (electric plus magnetic) and 'spectrum' (Latin for image or appearance).
How & Where It’s Used
A key concept in physics, astronomy, and communications technology.