## visible

https://doi.org/10.1351/goldbook.VT07496
Region of the electromagnetic spectrum extending from about $$400\ \text{nm}$$ to $$760\ \text{nm}$$. This is the @W06659@ region to which the human eye is sensitive. There are no precise limits for the spectral range of visible radiation since they depend upon the amount of @R05046@ reaching the retina and on the responsivity of the observer.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 439 [Terms] [Paper]