Date Range
Date Range
Date Range
He dream of flying is as old as mankind itself. However, the concept of the airplane. Has only been around for two centuries. Before that time, men and women tried to navigate the air by imitating the birds. They built machines with flapping wings called. On the surface, it seemed like a good plan. After all, there are plenty of birds in the air to show that the concept. Click on a picture to enlarge it.
Microsoft Windows Year 2000 and Beyond. 1981 Microsoft MS-DOS Computer Operating System. 1981 IBM The IBM PC - Home Computer. 1979 Seymour Rubenstein and Rob Barnaby WordStar So. 1978 Dan Bricklin and Bob Frankston VisiCalc Spread. 1973 Robert Metcalfe and Xerox The Ethernet Compute. On April 6, 1992, Win.
A Little Gun History Lesson. History of the Colt Revolver. The display in its present form was started in 1912, inspired by the exploits of the Navy during the Boer War in 1899. At anchor off Capetown were the cruisers, HMS Terrible. These guns were identical to the spring driven pellet guns and ha.
Which Pencil Is Which? Economics of Pencil Manufacturing. They also have that familiar cedar scent when sharpened! Pencils made from plastic. Pencils made from tropical rainforest wood.
The Early Years - 1876 - 1900. The New Century 1901 - 1940. The History of the Telephone. com, now out of business.
The first locomotive used successfully. The first locomotive used successfully 2. The locomotive in its childhood and its first vacillating steps . The History of Railroad Innovations. The first locomotive used successfully 2. Built by Stephenson in 1825 , over the first railroad bridge . The first locomotive used successfully. At the end of 18th. century , the steam engine became a .
The Evolution has already begun. Present - - Times Are Good. Very Late 1980s - - The Motorcycle Rises Again! 1978-1987 - - Motorcycle Sales Decline. 1945-1985 - - Motorcycle Growth. The Evolution has already begun.
The Cathode Ray Tube 1855 - 1896. The development of electronic television systems.
1- Transmission shaft ; 2 - Crown wheel ; 3- Driving pinion ; 4- Shaft bearing ; H,H Sun gears ; W,W half shafts ; T , Protective casing ; F , Differential hub. Used for the first time by F. Hill, but invented by Richard Roberts. Used in a vehicle to distribute power from the car transmission shaft to a pair of left-right wheels , while allowing wheels to rotate at different speeds.
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Jueves, 11 de agosto de 2011. Las amenazas de crisis producto de la situación in. Con la tecnología de Blogger.