The ’’art of welding’’ is rapidly giving way to what is now being described as the ’’science of welding.’’ The welder is being replace by highly sophisticated automatic machinery. For such a changeover to occur with high reliability and success, fundamental physics studies of various welding processes are needed. At a recent conference on ’’Welding RD‐‐Problems and Opportunities1’’ it was suggested that a central organization be designated to coordinate needed scientific research and development. It was emphasized that ’’more talented physicists are needed in the welding research and development field.’’ Having recently been extracted from the world of nuclear physics and implanted within the welding community, I can attest with first hand experience that welding is a ripe and exciting field for the physicist to enter. Basic unsolved problems in welding that will challenge the most academic‐oriented physicist are discussed.

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