Britannica
Sources used in this answer
Where is infrared radiation located compared with visible light?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
radiation
The harmful effects of radiation from nuclear bombing.
In the electromagnetic spectrum, infrared radiation is located immediately beyond the red end of the visible light range.12
While visible light occupies the portion of the spectrum detectable by the human eye, infrared radiation extends from this red boundary toward the longer wavelengths associated with microwaves. Because these two regions are contiguous, there is no precise, universally accepted boundary between them, and their ranges often overlap. Infrared radiation is characterized by lower frequencies and longer wavelengths than visible light, and while it is invisible to the human eye, it is commonly perceived as a sensation of warmth.132