Ballpoint Pen And Other Everyday Things Under A Microscope.
The Ballpoint Pen: Where did it come from? | Stuff of Genius
A ballpoint pen, also known as a biro or ball pen, is a pen that dispenses ink over a metal ball at its point, i.e. over a "ball point". The metal commonly used is steel, brass, or tungsten carbide. It was conceived and developed as a cleaner and more reliable alternative to dip pens and fountain pens, and it is now the world's most-used writing instrument: millions are manufactured and sold daily. As a result, it has influenced art and graphic design and spawned an artwork genre.
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