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ZF Friedrichshafen AG, also known as ZF Group, originally Zahnradfabrik Friedrichshafen ( lit. 'Cogwheel Factory of Friedrichshafen ' ), and commonly abbreviated to ZF, is a German technology manufacturing company that supplies systems for passenger cars, commercial vehicles and industrial technology. It is headquartered in Friedrichshafen, in ...
The history of fluid mechanics is a fundamental strand of the history of physics and engineering. The study of the movement of fluids (liquids and gases) and the forces that act upon them dates back to pre-history. The field has undergone a continuous evolution, driven by human dependence on water, meteorological conditions and internal ...
The early technological and industrial development in the United States was facilitated by a unique confluence of geographical, social, and economic factors. The relative lack of workers kept U.S. wages generally higher than salaries in Europe and provided an incentive to mechanize some tasks.
1887 – Pierre Henri Hugoniot based on the work of Rankine, introduces the Rankine–Hugoniot conditions to model shock waves. 1887 – First models of supersonic waves by Ernst Mach. [38] He introduces the concept of Mach number. 1888 – First commercial Venturi tube by Clemens Herschel.
The history of materials science is the study of how different materials were used and developed through the history of Earth and how those materials affected the culture of the peoples of the Earth. The term " Silicon Age " is sometimes used to refer to the modern period of history during the late 20th to early 21st centuries.
Decoupage or découpage ( / ˌdeɪkuːˈpɑːʒ /; [ 1] French: [dekupaʒ]) is the art of decorating an object by gluing colored paper cutouts onto it in combination with special paint effects, gold leaf, and other decorative elements. Commonly, an object like a small box or an item of furniture is covered by cutouts from magazines or from ...
Thomas Jefferson becomes the 3rd president of the United States on March 4, 1801. First Barbary War, 1801–1805. The Territory Northwest of the River Ohio is admitted to the Union as the State of Ohio (the 17th state) on March 1, 1803. The United States takes possession of the Louisiana Purchase, December 20, 1803.
The PDF 1.4 specification allowed form submissions in XML format, but this was replaced by submissions in XFDF format in the PDF 1.5 specification. XFDF conforms to the XML standard. XFDF can be used in the same way as FDF; e.g., form data is submitted to a server, modifications are made, then sent back and the new form data is imported in an ...