Georg Ernst Stahl's Phlogiston Theory

Georg Ernst Stahl

A physician, chemist, natural philosopher, alchemist, university professor, and court physician from Ansbach in the Holy Roman Empire. He studied medicine at the University of Jena and served as a professor on the medical faculty at the University of Halle, teaching medicine, chemistry, botany, pharmacy, and other subjects. He is particularly famous for systemizing the "phlogiston theory" to explain combustion and the alteration of metals, which exerted a major influence on 18th-century chemical thought. He also adopted a stance explaining biological phenomena through the "anima" (soul or vital force), demonstrating a pioneering approach in medicine that emphasized the mind-body connection. From 1715 onward, he served as the personal physician to King Frederick William I of Prussia and was involved in medical administration in Berlin.

Timeline

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Year	Georg Ernst Stahl
1659	Birth of Georg Ernst Stahl (Period: October 22, 1659, Location: Ansbach (Germany))
1679	Beginning of medical research at the University of Jena (Georg Ernst Stahl, Age: 19 years old, Period: 1679, Location: Jena (present-day Germany)) Medical and chemical research at the University of Jena (Georg Ernst Stahl, Age: 19 years old, Period: 1679–1684, Location: Jena (present-day Germany))
1683	Great Turkish War (Age: 23 years old, Period: 1683–1699, Location: Vienna, Hungary, Mohács, Serbia, Balkans, etc.)
1687	Court physician to the Duke of Saxe-Weimar (Georg Ernst Stahl, Age: 27 years old, Period: 1687–1694, Location: Weimar (present-day Germany))
1688	Nine Years' War (Age: 28 years old, Period: 1688–1697, Location: Rhineland, German States, Spanish Netherlands, and Western Europe)
1690	Systematization of phlogiston theory (Georg Ernst Stahl, Age: 30 years old, Period: 1690s–early 18th century, Location: Halle (present-day Germany)) Marriage (Georg Ernst Stahl, Catharina Margaretha Mik机ルツィン / Catharina Margaretha Mickeltzin, Age: 30 years old, Period: Estimated prior to 1690s, Location: Halle (present-day Germany))
1694	Appointment as Professor of Medicine at the University of Halle (Georg Ernst Stahl, Age: 34 years old, Period: 1694, Location: Halle (present-day Germany)) Medical education at the University of Halle (Georg Ernst Stahl, Age: 34 years old, Period: 1694–1715, Location: Halle (present-day Germany))
1697	Publication of "Zymotechnia fundamentalis seu fermentationis theoria generalis" (Age: 37 years old, Period: 1697, Location: Halle (present-day Germany))
1700	Election as a member of Leopoldina (Georg Ernst Stahl, Age: 40 years old, Period: 1700, Location: Within the Holy Roman Empire)
1701	War of the Spanish Succession (Age: 41 years old, Period: 1701–1714, Location: Western Europe, Italy, Spain, Netherlands, etc.)
1705	Marriage (Georg Ernst Stahl, Barbara Eleonora Tenzel, Age: 45 years old, Period: February 12, 1705, Location: Halle (present-day Germany))
1708	Publication of "Theoria medica vera" (Age: 48 years old, Period: 1708, Location: Halle (present-day Germany))
1711	Marriage (Georg Ernst Stahl, Regina Elisabeth Wesener, Age: 51 years old, Period: February 26, 1711, Location: Halle (present-day Germany))
1715	Appointment as court physician to the King of Prussia and head of medical administration (Georg Ernst Stahl, Age: 55 years old, Period: 1715, Location: Berlin (present-day Germany)) Medical administration and research in Berlin (Georg Ernst Stahl, Age: 55 years old, Period: 1715–1734, Location: Berlin (present-day Germany))
1723	Publication of "Fundamenta chymiae dogmaticae et experimentalis" (Age: 63 years old, Period: 1723, Location: Halle (present-day Germany))
1734	Death of Georg Ernst Stahl (Age: 74 years old, Period: May 14, 1734)

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Roman Empire	Rudolf II Matthias Ferdinand II Ferdinand Ernst Leopold I Charles VI Maria Theresa
Habsburg Family	Leopold Felician Prince Eugene Kara Mustafa Pasha Jan Sobieski Charles V
Science and Astronomy	Tycho Brahe Jan Baptist van Helmont Georg Marcgrave Georg Ernst Stahl Lorenz Heister Albrecht von Haller Philip Clüver Maria Sibylla Merian Johann Georg Gmelin
Music & Art	Peter Paul Rubens Heinrich Schütz Dieterich Buxtehude Johann Pachelbel Georg Philipp Telemann Johann Sebastian Bach Johann Lucas von Hildebrandt Johann Balthasar Neumann

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Georg Ernst Stahl's Phlogiston Theory

Georg Ernst Stahl

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