Infrared Light: This is a type of electromagnetic radiation with longer wavelengths than those of visible light, making it invisible to the human eye.
Ultraviolet Light: This is a type of electromagnetic radiation with shorter wavelengths than those of visible light, also invisible to the human eye but capable of causing sunburns and skin cancer.
Electromagnetic Spectrum:This is the entire range of all types of EM radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays.