storieselect.blogspot.com

Story of Invention

The story of the invention of the screwdriver. Once Robertson had conceived the notion of a square-headed screwdriver, he toyed with various manufacturing methods until he was able to produce screws with a square-shaped imprint on their heads. When the correctly-sized driver is inserted into a corresponding screw, the user can rortate the driver horizontally without fear of the driver slipping. Because the driver is self-centering, only one hand is needed for rotation. مرسلة بواسطة ELECTRONICS BLOG.

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Story of Invention | storieselect.blogspot.com Reviews

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The story of the invention of the screwdriver. Once Robertson had conceived the notion of a square-headed screwdriver, he toyed with various manufacturing methods until he was able to produce screws with a square-shaped imprint on their heads. When the correctly-sized driver is inserted into a corresponding screw, the user can rortate the driver horizontally without fear of the driver slipping. Because the driver is self-centering, only one hand is needed for rotation. مرسلة بواسطة ELECTRONICS BLOG.

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Story of Invention | storieselect.blogspot.com Reviews

https://storieselect.blogspot.com

The story of the invention of the screwdriver. Once Robertson had conceived the notion of a square-headed screwdriver, he toyed with various manufacturing methods until he was able to produce screws with a square-shaped imprint on their heads. When the correctly-sized driver is inserted into a corresponding screw, the user can rortate the driver horizontally without fear of the driver slipping. Because the driver is self-centering, only one hand is needed for rotation. مرسلة بواسطة ELECTRONICS BLOG.

INTERNAL PAGES

storieselect.blogspot.com

1

Story of Invention: The Invention of Radio

http://storieselect.blogspot.com/2011/02/blog-post_3092.html

The Invention of Radio. Early in the 19th century, Michael Faraday, an English physicist, demonstrated that an electrical current could produce a magnetic field. In 1888 Heinrich Hertz demonstrated that Maxwell’s prediction was true for transmission over a short distance. In 1901 the Italian physicist, Guglielmo Marconi, perfected a radio system that transmitted Morse code over the Atlantic Ocean. After World War II more advancements were made: The replacement of the vacuum tube by the transistor and of ...

2

Story of Invention: Story transistor invention

http://storieselect.blogspot.com/2010/11/blog-post.html

The first point contact transistor made use of the semiconductor germanium. Paper clips and razor blades were used to make the device. In 1947, John Bardeen and Walter Brattain, working at Bell Telephone Laboratories, were trying to understand the nature of the electrons at the interface between a metal and a semiconductor. They realized that by making two point contacts very close to one another, they could make a three terminal device - the first "point contact" transistor. مرسلة بواسطة ELECTRONICS BLOG.

3

Story of Invention: The story of the invention of the light bulb

http://storieselect.blogspot.com/2011/02/blog-post.html

The story of the invention of the light bulb. The history of the light bulb reads like a story straight out of a tabloid magazine. Contrary to what schools have taught for years, the American icon, Thomas Edison, neither invented the light bulb, nor held the first patent to the modern design of the light bulb. How do two inventors, from two different countries the invent exact same thing? Edison dusted himself off, and went into business setting up a direct current (DC) system of power distribution in Ne...

4

Story of Invention: The Invention of the Typewriter

http://storieselect.blogspot.com/2011/02/blog-post_3630.html

The Invention of the Typewriter. مرسلة بواسطة ELECTRONICS BLOG. كتابة مدونة حول هذه المشاركة. 8207;المشاركة في Twitter. 8207;المشاركة في Facebook. 8207;المشاركة على Pinterest. الاشتراك في: تعليقات الرسالة (Atom). The Invention of the Bicycle. The earliest bicycle was a wooden scooter-like contraption called a celerifere; it was invented about 1790 by Comte Mede de Sivrac of Fran. The story of the invention of the light bulb. The Invention of the Typewriter. The story of the invention of the screwdriver.

5

Story of Invention: The Invention of the Bicycle

http://storieselect.blogspot.com/2011/02/blog-post_4208.html

The Invention of the Bicycle. Kirkpatrick MacMillan (1812-1878), a blacksmith from Dumfriesshire, Scotland, invented the first bicycle with foot pedals in the 1830 to 1840's, but he never patented it and his idea did not catch on locally. مرسلة بواسطة ELECTRONICS BLOG. كتابة مدونة حول هذه المشاركة. 8207;المشاركة في Twitter. 8207;المشاركة في Facebook. 8207;المشاركة على Pinterest. الاشتراك في: تعليقات الرسالة (Atom). The Invention of the Bicycle. The story of the invention of the light bulb. Early in the 1...

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storieselect.blogspot.com

Story of Invention

The story of the invention of the screwdriver. Once Robertson had conceived the notion of a square-headed screwdriver, he toyed with various manufacturing methods until he was able to produce screws with a square-shaped imprint on their heads. When the correctly-sized driver is inserted into a corresponding screw, the user can rortate the driver horizontally without fear of the driver slipping. Because the driver is self-centering, only one hand is needed for rotation. مرسلة بواسطة ELECTRONICS BLOG.

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