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Coordinates: 41°45′25″N 87°32′42″W. The Sawyer Water Purification Plant, [1] formerly the South Water Purification Plant, is the first water filtration plant built in the City of Chicago. When completed in 1947, it was the largest such plant in the world. [2]
Actinium is a chemical element; it has symbol Ac and atomic number 89. It was first isolated by Friedrich Oskar Giesel in 1902, who gave it the name emanium; the element got its name by being wrongly identified with a substance André-Louis Debierne found in 1899 and called actinium. The actinide series, a set of 15 elements between actinium ...
South Water Market is a historic produce market in the Lower West Side neighborhood of Chicago, Illinois.Completed in 1925, the complex was designed as a structured replacement to Chicago's sprawling downtown produce markets on South Water Street; while these markets had existed since the mid-19th century, they had become a traffic and sanitation problem.
The South Side is one of the three major sections of the city of Chicago, Illinois, United States. Geographically, it is the largest of the three sections of the city, with the other two being the North and West Sides. It radiates and lies south of the city's downtown area, the Chicago Loop. Much of the South Side came from the city's ...
South Chicago, Chicago. South Chicago, formerly known as Ainsworth, is one of the 77 community areas of Chicago, Illinois. This chevron -shaped community is one of Chicago's 16 lakefront neighborhoods near the southern rim of Lake Michigan 10 miles south of downtown. A working-class neighborhood, it is bordered by East 79th Street on the north ...
Actinium-227 is the most stable isotope of actinium, with a half-life of 21.772 years. It mainly (98.62%) undergos beta decay, but sometimes (1.38%) it will undergo alpha decay instead. [1] 227 Ac is a member of the actinium series. It is found only in traces in uranium ores – one tonne of uranium in ore contains about 0.2 milligrams of 227 Ac.
Marguerite Catherine Perey (19 October 1909 – 13 May 1975) was a French physicist and a student of Marie Curie. In 1939, Perey discovered the element francium by purifying samples of lanthanum that contained actinium. In 1962, she was the first woman to be elected to the French Académie des Sciences, an honor denied to her mentor Curie.
The actinide series is a group of chemical elements with atomic numbers ranging from 89 to 102, [note 1] including notable elements such as uranium and plutonium.The nuclides (or isotopes) thorium-232, uranium-235, and uranium-238 occur primordially, while trace quantities of actinium, protactinium, neptunium, and plutonium exist as a result of radioactive decay and (in the case of neptunium ...