Radiation at wavelengths longer than visible light & shorter than microwaves
The shorter wavelengths penetrate ... [DOC] [TLE] Infrared Radiation - Cool Cosmos [PAR] Visible light is one of the few types of radiation that can penetrate our ... Infrared 
waves have wavelengths longer than visible and shorter than microwaves, and... [DOC] [TLE] The Electromagnetic Spectrum -- Radio Waves to Cosmic Rays [PAR] High frequency light has short wavelengths and high energy.