Question

Welders wear special goggles or face masks with glass windows to protect their eyes from electromagnetic radiations. Names the radiations and write the range of their frequency

Answer 1

Welders wear special goggles with glass windows to protect the eyes from Ultra Violet rays also known as UV rays.

Goggles provide them a degree of eye protection from heat, optical radiation and sparks produced by the welding. Welding produces UV and IR radiations which cannot be seen by naked eye and can produce eye injury If special goggles are not wear.

UV blocking protective welding goggles are considered primary protection, with this eyes are still protected even when the face shield or helmet is lifted up.

Ultraviolet rays UV rays have frequency range 400nm to 0.6nm. Where nm denotes Nanometers.