noun
- A unit of frequency equal to one quintillion (10^18) hertz, used to measure electromagnetic radiation in the terahertz and infrared spectrum.
Usage: technical; physics; abbreviation: EHz
Examples
- Researchers are developing terahertz and exahertz imaging systems for medical diagnostics.
- The exahertz frequency range lies between infrared and visible light on the electromagnetic spectrum.
- Exahertz radiation can penetrate certain materials that are opaque to visible light.
- Scientists use exahertz spectroscopy to study molecular properties and chemical composition.