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He also played an importqant role in the development of the Western or Sicilian school of Greek medicine.He cured a plague at the Sicilian city of Selinus and claimed he was a god.The 12-chapter treatise included 292 woodcult illustrations carfully executed by Blasius Weffring.
Ole Christensen Roemer - Denmark; was the first to show that the velocity of light is finite.
He printed the 42-line Gutenberg Bible (c.1455) but in the end he lost a suit from one of his creditors, who confiscated the type for the Bible. Aided by Konrad Humery, he was able to set up another press, but little is known of his work thereafter.
The impact of printing was enormous - it led to an almost instant mass production of books and truly initiated the information age.
Between 14 he was in Strasbourg, probably working as a goldsmith, and here he may have begun printing.
In 1438 he entered a contract with three others to develop a refined printing technique and became the inventor of moveable-type mechanical printing in Europe.
The school, later called the Garden, accepted women and slaves. Fragments from his most important work, Peri physeos (On Nature), were recovered from the charred papyri of Herculaneum, buried by an eruption of Vesuvius in AD 79.