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Charles Martin Hall produced the first samples of aluminium from the electrolysis of aluminium oxide, after several years of intensive work. He was assisted in this project by his older sister, Julia Brainerd Hall.
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Charles Martin Hall
American inventor, businessman, and chemist (1863–1914)
Charles Martin Hall was an American inventor, businessman, and chemist. He is best known for his invention in 1886 of an inexpensive method for producing aluminium, which became the first metal to attain widespread use since the prehistoric discovery of iron. He was one of the…Source: Wikipedia (CC BY-SA)
Aluminium
Chemical element with atomic number 13 (Al)
Aluminium is a chemical element; it has symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has a great affinity towards oxygen, forming a protective layer of oxide on the surface when exposed to air.…Source: Wikipedia (CC BY-SA)
Julia Brainerd Hall
American chemist and painter (1859–1926)
Julia Brainerd Hall was the sister of American scientist Charles Martin Hall. She supported him in his discovery of the Hall process for extracting aluminium from its ore. She was also a still-life painter who exhibited at the Edgar Adams Gallery in Cleveland.Source: Wikipedia (CC BY-SA)
February 23
Day of the year
February 23 is the 54th day of the year in the Gregorian calendar; 311 days remain until the end of the year.Source: Wikipedia (CC BY-SA)