1509 in science
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The year 1509 in science and technology included many events, some of which are listed here.
Exploration
- September 11 â Diogo Lopes de Sequeira reaches Malacca, having crossed the Gulf of Bengal.
Geology
- September 10 â Constantinople earthquake.[1]
Mathematics
- June 11 â Luca Pacioli's De divina proportione, concerning the golden ratio, is published in Venice, with illustrations by Leonardo da Vinci.
Births
- Bernardino Telesio, Italian philosopher and natural scientist (died 1588)
- possible date â Guillaume Le Testu, French privateer, explorer and cartographer (k. 1573)
Deaths
- Juan de la Cosa, Spanish explorer and cartographer (b. c. 1460)