الوسم: History
Alcatraz – An Island’s History
[ad_1] Alcatraz, the small island in San Francisco Bay, received its name in 1775 from the Spanish explorer Juan Manuel de Ayala. He christened the land La Isla de los Alcatraces, which translates to Island of the Pelicans. He had no interest, as it was uninhabited, barren ground with minimal vegetation and treacherous, icy currents.…
The History of Matchless Motorcycles
[ad_1] For a while, Matchless were the largest motorcycle maker and from the turn of the century, the Collier Brothers were involved in powered two wheelers. Both Harry and Charlie Collier believed in competition, and before World War 1, the marque was well established. The company’s premises were in Plumstead, South East London, and were…
The History of Matchless Motorcycles
[ad_1] For a while, Matchless were the largest motorcycle maker and from the turn of the century, the Collier Brothers were involved in powered two wheelers. Both Harry and Charlie Collier believed in competition, and before World War 1, the marque was well established. The company’s premises were in Plumstead, South East London, and were…
A History of Boeing 720 Aircraft Accidents
[ad_1] The Boeing 720 was involved in incidents far worse than hijackings, although only two of them in the 15-year period from 1960 to 1974 entailed fatalities. The earliest recorded 720 incident took place on December 4, 1960 on board a United Airlines 720-022 carrying seven crew members and 84 passengers. The flight penetrated an…
A History of Vickers VC10 Aircraft Accidents
[ad_1] As one of four long-range, quad-engine, first-generation jetliners, along with the Boeing 707, the McDonnell-Douglas DC-8, and the Ilyushin Il-62, the Vickers VC10 was one of only two to feature uninterrupted wings, aft-mounted Rolls Royce Conway turbofans, and a t-tail to maximize its short-field, high-lift performance. Although it was praised by passengers and crew…
Chronology of African History – Colonizing Nations (19th – 20th Centries)
[ad_1] It is the purpose of this article to provide the general reader with a comprehensive picture of world’s greatest civilization originating in Africa, a continent leading modern scholars today refer to it as the ‘the cradle of civilization’. This chronology seeks to address sophisticated and intelligent readers who had never previously read anything serious…
Passive Solar Lighting – A History of Solar Tubes
[ad_1] When people talk about passive solar energy what usually comes to mind is the orientation of building sites for maximum heating in the winter and cooling in the summer. Orienting buildings to take maximum advantage of the sun is an ancient practice, but there are other passive uses of sunlight which are just as…
Electronic Keyboards – Their History and Development
[ad_1] The term “electronic keyboard” refers to any instrument that produces sound by the pressing or striking of keys, and uses electricity, in some way, to facilitate the creation of that sound. The use of an electronic keyboard to produce music follows an inevitable evolutionary line from the very first musical keyboard instruments, the pipe…
The History of Helical Piers
[ad_1] In the early 1800’s, Alexander Mitchell developed power-installed helical foundations. These power-installed foundations were used in conjunction with the construction of several lighthouses in the English tidal basin. In the 1920’s, light-load-capacity, manually installed helical screw anchors began to be used by the electric power industry for guy wires and as anchorage for utility…
History of Conveyor Belts
[ad_1] The history of conveyor belts begins in the latter half of the 17th century. Since then, conveyor belts have been an inevitable part of material transportation. But it was in 1795 that conveyor belts became a popular means for conveying bulk materials. In the beginning, conveyor belts were used only for moving grain sacks…