Chester Carlson invented electrophotography, which is used in millions of photocopiers around the world. Then, electrography was named after the concept of "xerography", which means 'dry and writing'.
Negishi was in his 40s when he came up with the idea to prototype a mass-produced, coin-operated karaoke machine, branded the "Sparko Box", after a colleague at the consumer electronics assembly business he ran in Tokyo criticized his singing.
He invented a metal alloy suitable for printing, a mold for casting letters, special oil-based printing ink, and a machine to achieve all this. Though movable type was already in use in East Asia, Gutenberg invented the printing press, which later spread worldwide.
He immigrated to the USA from Romania with his family when he was a child. Opposing the idea of an ideal mental age to measure individual success, he defined the normal intelligence level as the average intelligence level of all members of an age group.
Alexander Grothendieck is considered by many to be the greatest mathematician of the 20th century. He focused on algebraic geometry for most of his career, and his contributions led to significant advances in many problems, including Fermat's Last Theorem.
He came to the world as a child of a poor family: It is not easy to summarize in one article the seventy-eight years of life of one of the greatest scientists of all time. Carl Friedrich Gauss (1777- 1855), known as the "prince of mathematicians", is one of the greatest mathematicians of all time.
Being a woman in science is hard, and it's even harder if you're a black woman in early 20th-century America. Until the end of the 19th century, female mathematicians had to struggle hard to overcome the negative effects of being a woman.
As technology advances, means of transportation that will make people's daily lives easier are becoming increasingly diverse. One of the vehicles that has become widespread in recent years is the electric scooter. So when do you think the scooter was invented?
Harold Hardy was a pure mathematician, even Cambridge mathematicians called him the purest of pure mathematicians. Hardy prided himself on the abstraction and "uselessness" of his works. For him, the glory of mathematics was in its abstractness.
Mathematics is everywhere for those who notice. Among the people who are aware of this, great mathematicians, artists, scientists, and writers have emerged.
