constricted arc welding

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Plasma arc welding — (PAW) is an arc welding process similar to gas tungsten arc welding (GTAW). The electric arc is formed between an electrode (which is usually but not always made of sintered tungsten) and the workpiece. The key difference from GTAW is that in PAW … Wikipedia
Hyperbaric welding — is the process of welding at elevated pressures, normally underwater. Hyperbaric welding can either take place in the water itself or inside a specially constructed pressure chamber and hence a dry environment. It is predominantly referred to as… … Wikipedia
Photokeratitis — Snow blindness redirects here. For other uses, see Snowblind (disambiguation). Photokeratitis Classification and external resources ICD 10 H16.1 ICD 9 … Wikipedia
High voltage — The term high voltage characterizes electrical circuits, in which the voltage used is the cause of particular safety concerns and insulation requirements. High voltage is used in electrical power distribution, in cathode ray tubes, to generate X… … Wikipedia

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