Question

Are these radiations visible to human eye ?​

Answer 1

which radiations?‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎

Answer 2

QUESTION :

Are these radiations visible to human eye ?

ANSWER :

Simply those objects in space that emit types of electromagnetic radiation to which the human eye is insensitive. These radiations include radio waves, infrared and ultraviolet radiation, and x rays and gamma rays.