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Halbert Powers Gillette
Halbert Powers Gillette (1869–1958) was an American engineer and prolific author of textbooks and handbooks for the engineering and construction fields. Biography Born on August 5, 1869, in Waverly, Iowa, to Theodore Weld and Laetitia S. (Powers),"GILLETTE, Halbert Powers, Editor, engineer" in: ''WHO WAS WHO IN AMERICA,'' Vol. III 1951–1960 Gillette attended the Hammond Hall Academy in Salt Lake City, from which he graduated in 1886. Six years later in 1892, he received his engineering degree at the School of Mines at Columbia University, where he was classmate of Edward B. Durham. After some years working in the industry, Gillette served as assistant New York State Engineer under Campbell W. Adams from 1896 to 1898. The next three years he worked as a contractor, and from 1903 to 1905 he was associate editor of the ''Engineering News''. In 1905, he founded Scranton Gillette Communications, Inc., where he became president. From 1906 to 1907, he served as chief enginee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halbert P
A halberd (also called halbard, halbert or Swiss voulge) is a two-handed pole weapon that came to prominent use during the 13th, 14th, 15th, and 16th centuries. The word ''halberd'' is cognate with the German word ''Hellebarde'', deriving from Middle High German ''halm'' (handle) and ''barte'' (battleaxe) joined to form ''helmbarte''. Troops that used the weapon were called halberdiers. The halberd consists of an axe blade topped with a spike mounted on a long shaft. It always has a hook or thorn on the back side of the axe blade for grappling mounted combatants. It is very similar to certain forms of the voulge in design and usage. The halberd was usually 1.5 to 1.8 metres (5 to 6 feet) long. The word has also been used to describe a weapon of the Early Bronze Age in Western Europe. This consisted of a blade mounted on a pole at a right angle. History The halberd was inexpensive to produce and very versatile in battle. As the halberd was eventually refined, its point was mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including controlling a watercourse that drains an existing body of water, interrupting a watercourse to form an embayment within it, through excavation, or building any number of retaining walls or levees. In other contexts, "reservoirs" may refer to storage spaces for various fluids; they may hold liquids or gasses, including hydrocarbons. ''Tank reservoirs'' store these in ground-level, elevated, or buried tanks. Tank reservoirs for water are also called cisterns. Most underground reservoirs are used to store liquids, principally either water or petroleum. Types Dammed valleys Dammed reservoirs are artificial lakes created and controlled by a dam A dam is a barrier that stops or restricts the flow of surface water or underground streams ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Sheet, 1909 (front)
Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the conscious experience. Time is often referred to as a fourth dimension, along with three spatial dimensions. Time has long been an important subject of study in religion, philosophy, and science, but defining it in a manner applicable to all fields without circularity has consistently eluded scholars. Nevertheless, diverse fields such as business, industry, sports, the sciences, and the performing arts all incorporate some notion of time into their respective measuring systems. 108 pages. Time in physics is operationally defined as "what a clock reads". The physical nature of time is addressed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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