The infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range:
— They could sense radiation in the infrared.

synoniem: infrared frequency.

Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves.

synoniemen: infrared emission, infrared light, infrared radiation.

Nederlands: infraroodstraling
Pools: promieniowanie infraczerwone, podczerwień, promieniowanie nadczerwone

Having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end.

Pools: podczerwony