Nils Gustaf Dalén (30 novembre 1869 - 9 décembre 1937) est un ingénieur en mécanique. En 1892, il a inventé un appareil de matière grasse du lait et allé à Stockholm pour montrer son invention pour Gustaf de Laval qui l'encourage à avoir une éducation technique. Il a été
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Nils Gustaf Dalén (November 30, 1869 - December 9, 1937) was a Swedish mechanical engineer. In 1892 he invented a milk-fat tester and went to Stockholm to show his invention for Gustaf de Laval who encouraged him to get a basic technical education. He was admitted to the Chalmers University of Technology where he earned his Master's degree and a Doctorate in 1896. In 1906 Dalén became chief engineer at the Gas Accumulator Company (manufacturer and distributor of acetylene) and in 1909 when AGA was founded, he was appointed the managing director for the company. During his life, AGA was one of the most innovative companies in Sweden and produced a large variety of products that grew every year. Early in 1912, Dalén was blinded in an acetylene explosion during a test of maximum pressure for the accumulators. Later the same year he was awarded the Nobel Prize for physics for his "invention of automatic regulators for use in conjunction with gas accumulators for illuminating lighthouses and buoys". Despite his blindness, Dalén controlled AGA until his death in 1937 at the age of 68. He received over 100 patents during his lifetime. He invented the AGA cooker (heat storage stove and cooker) and the Dalén light (a light produced from burning of carbide gas (acetylene), combined with a solar sensor which automatically operates the light only during darkness).
