Silicon carbide, often used for grinding and machining applications, is pretty tough stuff! This application required that a permanent engraved mark be produced, without causing local mechanical weakening of the part. The laser ablates the material, leaving a clean engraved mark to the required depth.
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Gyrotron technology to accelerate Tokamak Energy fusion dream
My understanding of the role of the central magnet is to first start an electric current in the near vacuum of the Tokamak containing a mixture of...