Sir William Harvey is wrongly credited with the modern theory of Pulmonary Circulation. Ibn Al-Nafis, an Arab physician of the 13th Century, explained the basic principles of Pulmonary Circulation nearly 350 years before Harvey was born.
Who Discovered Pulmonary Circulation, Ibn Al-Nafis or Harvey?
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Figure 1. The Tabula Rogeriana, drawn by al-Idrisi for Roger II of Sicily in 1154, one of the most advanced ancient world maps. Modern consolidation, created from the 70 double-page spreads of the original atlas. (Source)
Figure 1: Muslim expansion by the end of Umayyad rule in 750. (Source).
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