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Cambria County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 133,472. [2] Its county seat is Ebensburg. [3] The county was created on March 26, 1804, from parts of Bedford, Huntingdon, and Somerset counties and later organized in 1807. [4] It was named for the nation of Wales, which in Latin is known as "Cambria". [5] The county is part of the ...
Hydrogen peroxide is a reactive oxygen species and the simplest peroxide, a compound having an oxygen–oxygen single bond. It decomposes slowly into water and elemental oxygen when exposed to light, and rapidly in the presence of organic or reactive compounds.
Charlemagne [b] ( / ˈʃɑːrləmeɪn, ˌʃɑːrləˈmeɪn / SHAR-lə-mayn, -MAYN; 2 April 748 [a] – 28 January 814) was King of the Franks from 768, King of the Lombards from 774, and Emperor of what is now known as the Carolingian Empire from 800, holding these titles until his death in 814. He united most of Western and Central Europe, and was the first recognized emperor to rule in ...
The speed of light in vacuum, commonly denoted c, is a universal physical constant that is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour). [Note 3] According to the special theory of relativity, c is the upper limit for the speed at which conventional matter or energy (and thus any signal ...
Luxottica Group S.p.A. is an Italian eyewear conglomerate based in Milan. As a vertically integrated company, Luxottica designs, manufactures, distributes, and retails its eyewear brands all through its own subsidiaries. The company, presently organized as a subsidiary of EssilorLuxottica which formed when the Italian conglomerate merged with ...
Serena Jameka Williams (born September 26, 1981) [1] is an American former professional tennis player. Widely regarded as one of the greatest tennis players of all time, [a] she was ranked world No.1 in singles by the Women's Tennis Association (WTA) for 319 weeks, including a joint-record 186 consecutive weeks, and finished as the year-end No.1 five times. She won 23 Grand Slam women's ...