Hungarian Inventors Series-László Bíró Ballpoint pen Graphics there is a short description

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Size: 65 x 18 cm

After watching an unsuccessful experiment by his professor

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Hungarian Inventors Series-László Bíró Ballpoint pen Graphics there is a short descriptionLszl Br Ballpoint pen Did you know? Lszl Br invented the ballpoint pen that bears his name in Budapest in 1930. He noticed that the ink used in newspaper printing dries faster, keeping the paper dry and clean. This ink was lighter than standard ink, so he devised a pen with a small ball for a nib, which is kept in contact with a supply of ink. As the pen moves across the paper, the ball rotates, picking the ink up and depositing it on the paper. The