Letâs Talk Science: UV Rays, geoengineering, and shrilk
To begin, we must realize that UV rays, or ultraviolet rays, are not always harmful. In some cases, UV rays are actually useful. They help in some medical treatments and provide the essential vitamin, Vitamin D3 to the body. Even though the sun is their primary source, UV rays are not just emitted by sun but also by other objects like mercury lamps, tanning lamps, laser machines, and often during welding. UV rays are electromagnetic rays that are invisible to us.