👤 PersonAl-Razi866–925WikipediaWikipedia (es)Wikidata🌍 View on the globeInventions and discoveries · 3c. 900Kerosene by distillation of petroleum (white naft)Invention or technique · inventorc. 910Differentiation of smallpox and measlesDiscovery · discovererc. 920Classification of chemical substances (al-Razi)Discovery · discoverer