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Hero of Alexandria (/ ˈ h ɪər oʊ /; Ancient Greek: Ἥρων [a] ὁ Ἀλεξανδρεύς, Hērōn hò Alexandreús, also known as Heron of Alexandria / ˈ h ɛr ən /; probably 1st or 2nd century AD) was a Greek mathematician and engineer who was active in Alexandria in Egypt during the Roman era.
Heron's fountain is a hydraulic machine invented by the 1st century AD inventor, mathematician, and physicist Heron (or Hero) of Alexandria. [ 1 ] Heron studied the pressure of air and steam, described the first steam engine , and built toys that would spurt water, one of them known as Heron's fountain.
Location of Roanoke in Virginia. This is a list of the National Register of Historic Places listings in Roanoke, Virginia. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in the independent city of Roanoke, Virginia, United States. The locations of National Register properties ...
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Roanoke County, Virginia, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map.
The district began its development with George Howbert's sale of his house and farmland to the Wasena Land Company in 1910. [3] At the time the only connection to the developed portion of the city was a wooden bridge spanning the Roanoke River; that bridge was reinforced with a steel frame concurrent to the neighborhood being graded and platted (it would be 1939 before the existing span was ...
This page was last edited on 9 March 2003, at 21:45 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Washington Park is a neighborhood located in central Roanoke, Virginia, that initially developed in the 1920s as an early Roanoke suburb It borders the neighborhoods of Roundhill on the north and Williamson Road on the north and east, Gainsboro and Harrison on the south, and Melrose-Rugby on the west. [ 1 ]
Southwest Historic District is a national historic district located at Roanoke, Virginia. It encompasses 1,547 contributing buildings constructed between 1882 and 1930 in the Roanoke neighborhoods of Old Southwest, Mountain View, and Hurt Park. It is a primarily residential district with houses in a variety of popular late-19th and early-20th ...