Gerolamo Cardano was born in Pavia, Italy back in 1501 to Fazio and Chiara. His mother had tried to abort him by taking several types of medication. After a depressing childhood by his overbearing father, in 1520, he entered the University of Pavia to study philosophy and science. In 1525, he graduated with a doctorate in medicine.
Due to his upbringing, he had an eccentric and confrontational style, which preceded him, making it difficult for him to find work. With the help of a few noblemen he obtained a teaching position in mathematics in Milan. He simultaneously practiced medicine and taught mathematics. He must have been good, because he turned down offers from the kings of Denmark and France, and the Queen of Scotland. From what I’ve read he was also an accomplished gambler. He wrote the (Book on Games of Chance) in 1564. It was the first systematic treatment of probability.
What you may not know about Gerolamo is that he invented the combination lock, the gimbal or gyroscope which is a device used for measuring or maintaining orientation and angular velocity.
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