Nib of a ballpoint pen,coloured scanning electron micrograph. Ballpoint pens have an internal chamber filled with a viscous ink that is dispensed at the tip during use by the rolling action of a small metal sphere (grey). The ballpoint pen was invented in 1938 by Hungarian journalist Laszlo Biro (1899-1985) and was quickly adopted by the British Royal Air Force to solve the problems of writing at high altitudes. In 1953 Marcel Bich (1914-1994),developed a process for producing ballpoint pens at low cost,making the pens an everyday item. Magnification: x15 when printed 10 centimetres wide | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 4800 px × 3781 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |