History
In 1909, Max Bermann, an engineer in Budapest, was the first to discover that spark testing can be used reliably to classify ferrous material. He originally claimed to be able to distinguish different types of ferrous materials based on percent carbon and principal alloying elements. Moreover, he claimed to achieve an accuracy of 0.01% carbon content.
As of the late 1980s, the industrial use of spark testing is not as common as it used to be.
Read more about this topic: Spark Testing
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“History takes time.... History makes memory.”
—Gertrude Stein (1874–1946)
“We know only a single science, the science of history. One can look at history from two sides and divide it into the history of nature and the history of men. However, the two sides are not to be divided off; as long as men exist the history of nature and the history of men are mutually conditioned.”
—Karl Marx (1818–1883)
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—George Orwell (1903–1950)