terahertz
/ˈtɛrəhɜrts/
noun
- A unit of frequency equal to one trillion hertz, used especially in measuring electromagnetic waves such as radio waves and light.
- Scientists are developing terahertz communication systems for faster wireless data transfer.
- Terahertz waves are used in security scanners to see through clothing without X-rays.
- The frequency of visible light is in the hundreds of terahertz range.