Great Inventions and Discoveries

Photostat

In 1937, an American law student Chester Carlson invented a copying process based on electrostatic energy called Xerography. Xerography became commercially available in 1950 by the Xerox Corporation. The word ‘Xerography’ comes from the Greek for ‘dry writing.’ Carlson had been frustrated with the slow mimeograph machine, and the cost of photography, and that lead

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Penicillin

Penicillin is a widely used antibiotic agent, derived from the Penicillin mould. Penicillin was discovered by bacteriologist Alexander Fleming at St. Mary’s Hospital in London in 1928. He observed that a blue—green mould had contaminated a plate culture of Staphylococcus, and that colonies of bacteria, adjacent to the mould, were being dissolved. Curious, Alexander Fleming

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Pencil

Graphite is a form of carbon, first discovered in the Seathwaite Valley on the side of the mountain Seathwaite Fell in Borrowdale, near Keswick, England, about 1564 by an unknown person. Shortly after this the first pencils were made in the same area. The breakthrough in pencil technology came when French chemist Nicolas Conte developed

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