Question

When did people start knowing about uv rays?

Answer 1

$\textbf{Hey There}$

=>Here is ur Answer<=

UV radiation was discovered in 1801 by German physicist Johann Wilhelm Ritter. And from his discovery people came to know about UV rays.

|HopE__It__HelpS| :-|

Answer 2

Answer:

UV radiation was discovered in 1801 by German physicist Johann Wilhelm Ritter. And from his discovery people came to know about UV rays.

|HopE__It__HelpS| :-|