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- Pen
How ballpoint pen is made? - History, Background, Raw materials, The manufacturing process- A ballpoint pen is a writing instrument which features a tip that is automatically refreshed with ink. It consists of a precisely formed metal ball seated in a socket below ...
- How the pencils are made?
- 4 - After three years, the trees are 4 m high. The plantation area is thinned and the trees are pruned to facilitate growth and assure the quality of the ...
- Sensa ball-point pens
- Paul C. Fisher invented his pen and refill at the right time: It was the era of the space race. Astronauts involved in the Mercury and Gemini missions had been ...
- The history of the ballpoint pen
- In 1879 in Providence, Rhode Island, Alonzo T. Cross invented the stylographic fountain pen, a precursor of the ball-point pen. He engaged in competition with Duncan Mackinnon, the other stylographic ...
- The Ballpoint Pen
- The Hungarian Laszlo Biro, a magazine publisher, noticed, during a visit to a printer's, how quickly the printer's ink dried. It occurred to him that this fast-drying ink would work ...
- Fountain pens
- While a student in Paris, the Romanian inventor Petrache Poenaru invented the world's first fountain pen, an invention for which the French Government issued a patent on May 25, 1827. ...
- Pen Technology
- A pen is a tool used for writing or drawing with a colored fluid, such as ink. A ballpoint pen is a pen that uses a small rotating ball made ...
- Proverbs of Pen
- Students today depend too much upon ink. They don't know how to use a pen knife to sharpen a pencil. Pen and ink will never replace the pencil. ----- National ...
- Pen knowledge
- How Ballpoint Pens Work In this electronic age of voice mail, e-mail and cell phones, there is still no substitute for pen and paper. Even as you browse the Web, ...
- How lumber is made? - Background, Raw materials, The manufacturing process
- Lumber is a generic term that applies to various lengths of wood used as construction materials. Pieces of lumber are cut lengthwise from the trunks of trees and are characterized ...
