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- Pen
How crayon is made - Background, Raw materials, The manufacturing process of crayon- The earliest form of recorded communication is graphic art, beginning with drawings scratched on the walls of caves by prehistoric peoples. Cave dwellers had limited drawing tools, perhaps only pieces ...
- Quills
- The Dead Sea Scrolls discovered in 1947 on the northwest bank of the Dead Sea date back to around 100 BC. They were written in Hebrew dialects with bird feathers ...
- Porous Point
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- fountain pen
- A fountain pen is a pen that contains a reservoir of water-based liquid ink. The ink is fed to the nib through a "feed" via a combination of gravity and ...
- About Envelope
- An envelope is a packaging product, usually made of flat, planar material such as paper or cardboard, and designed to contain a flat object, which in a postal-service context is ...
- Inventing a New Kind of Pencil
- So you want to do some inventing? Well then, ask a student in your class to volunteer showing a pencil to the class that needs improving? For example, a pencil ...
- 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 ...
- Pencil Sharpener
- A pencil sharpener (also referred to as pencil parer) is a device for sharpening a pencil's point by shaving one end. Pencil sharpeners exist in both electric and hand-powered forms. ...
- How acrylic plastic is made? - Background, Raw materials, The manufacturing process of acrylic plastic
- Acrylic plastic refers to a family of synthetic, or man-made, plastic materials containing one or more derivatives of acrylic acid. The most common acrylic plastic is polymethyl methacrylate (PMMA), which ...
- How expanded polystyrene foam (epf) is made? - Background, Raw materials, Design, The manufacturing process of expanded polystyrene foam (epf)
- Expanded polystyrene foam (EPF) is a plastic material that has special properties due to its structure. Composed of individual cells of low density polystyrene, EPF is extraordinarily light and can ...
