COLIN CUTHBERT / SCIENCE PHOTO LIBRARY COLIN CUTHBERT / SCIENCE PHOTO LIBRARY
Welding. Welder welding a stainless steel tube. Welders wear face masks to protect them from the intense light generated. Welding is done to seal two metals together by melting the edges when they are in contact, and allowing them to solidify together. The path of the welding can be seen at top centre. The bows of light on either side of the tube are reflections of the welder's light.
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